Pronunciation Key Consonants a as in bat. that b as in bib. dribble a as in bait. crate ch as in charge, stretch 器 as in bother, father d as in dog, bad f as in fix. safe e as in beet. treat g as in good as in bit. skit T as in bite light i as in joint, digit o as in boat note k as in cast, brick k as in Bach (used rarely) as in u as in boot, pool m as in mild. summer a as in but sofa n as in new dent au as in crowd, power n indicates nasalization of preced- ya as in formula, spectacula n as in ring, single p as in pier, slip in red scar Semivowels/Semiconsonants w as in wind. twin sh as in sugar, shoe y as in yet, onion t as in timid. cat th as in thin breath Stress(Accent) th as in then breathe precedes syllable with primary v as in veil, weave stress as in zoo. cruise h as in beige, treasure Syllabication precedes syllable with variable Indicates syllable boundary or indeterminate primary when following syllable is econdary stress unsure Copyright 2003 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use
Pronunciation Key Vowels Consonants a as in bat, that b as in bib, dribble a¯ as in bait, crate ch as in charge, stretch a¨ as in bother, father d as in dog, bad e as in bet, net f as in fix, safe e¯ as in beet, treat g as in good, signal i as in bit, skit h as in hand, behind ı¯ as in bite, light j as in joint, digit o¯ as in boat, note k as in cast, brick o˙ as in bought, taut k as in Bach (used rarely) u˙ as in book, pull l as in loud, bell u¨ as in boot, pool m as in mild, summer ə as in but, sofa n as in new, dent au˙ as in crowd, power n indicates nasalization of precedo˙ i as in boil, spoil ing vowel yə as in formula, spectacular ŋ as in ring, single yu¨ as in fuel, mule p as in pier, slip r as in red, scar Semivowels/Semiconsonants s as in sign, post w as in wind, twin sh as in sugar, shoe y as in yet, onion t as in timid, cat th as in thin, breath Stress (Accent) th as in then, breathe precedes syllable with primary vas in veil, weave stress z as in zoo, cruise zh as in beige, treasure precedes syllable with secondary stress Syllabication Indicates syllable boundary ¦ precedes syllable with variable when following syllable is or indeterminate primary/ unstressed secondary stress xi Copyright 2003 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use.
a See ampere. position it if it drifts out of the acceptable a:限h4mm邮h tended depth or target is reached. (Jban 1. To erial for exa bout by roughening or scratching. a'b eat down the surface in order to create a pattern abrasion test MECH ENG The measurement of figure in low relief. Abat I a substance or other quantity such as atmos- 73"blazons, or by dimensional comparisons. bat-jour BUILD A device that is used to de- abrasive belt MECH ENG A cloth, leather, or It streams an rials through which cattle or other animals orasive blasting MECH ENG The cleaning on to the passage of air or sound, as in a louver inding or polishing. cone MECH ENG An abrasive sit by an arbor for abrasive machining Ia'bras. A block ther open abrasive disk MECH ENG An abrasive sintered 16a2 in a wall two cells are produced. t orasive machining. abrasav 6F计如m邮,的Q bney level See clinometer. I'ab.al J om a solid by abnormal reading See abnormal time. I ab'nor- ICoNT SYSI A branching instruc- tool and are milled simultane- on in the program tool-center point is properly positioned, and to masonry to NG A space between stones led with mortar. i ab. ru'vwar Copyright 2003 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use
A a See ampere. reposition it if it drifts out of the acceptable A See ampere; angstrom. range. { əbo˙rt branch } A˚ See angstrom. Abrams’ law [CIV ENG] In concrete materials, a axis [MECH ENG] The angle that specifies the for a mixture of workable consistency the rotation of a machine tool about the x axis. strength of concrete is determined by the ratio { a¯ aksis } of water to cement. { a¯brəmz lo˙ } abandon [ENG] To stop drilling and remove the abrasion [ENG] 1. The removal of surface matedrill rig from the site of a borehole before the rial from any solid through the frictional action intended depth or target is reached. { əban of another solid, a liquid, or a gas or combination dən } thereof. 2. A surface discontinuity brought abate [ENG] 1. To remove material, for example, about by roughening or scratching. { əbra¯ in carving stone. 2. In metalwork, to excise or zhən } beat down the surface in order to create a pattern abrasion test [MECH ENG] The measurement of or figure in low relief. { əba¯t } abrasion resistance, usually by the weighing of abatement [ENG] 1. The waste produced in cut- a material sample before and after subjecting it ting a timber, stone, or metal piece to a desired to a known abrasive stress throughout a known size and shape. 2. A decrease in the amount time period, or by reflectance or surface finish of a substance or other quantity, such as atmos- comparisons, or by dimensional comparisons. pheric pollution. { əba¯tmənt } { əbra¯zhən test } abat-jour [BUILD] A device that is used to de- abrasive belt [MECH ENG] A cloth, leather, or flect daylight downward as it streams through a paper band impregnated with grit and rotated window. { a¨ba¨zhu˙r } as an endless loop to abrade materials through abattoir [IND ENG] A building in which cattle or continuous friction. { əbra¯səvbelt } other animals are slaughtered. { abətwa¨r } abrasive blasting [MECH ENG] The cleaning or abat-vent [BUILD] A series of sloping boards or finishing of surfaces by the use of an abrasive metal strips, or some similar contrivance, to entrained in a blast of air. { əbra¯səv blastiŋ } break the force of wind without being an obstruc- abrasive cloth [MECH ENG] Tough cloth to tion to the passage of air or sound, as in a louver whose surface an abrasive such as sand or emery or chimney cowl. { a¨ba¨va¨n } has been bonded for use in grinding or polishing. ablatograph [ENG] An instrument that records { əbra¯səv klo˙th } ablation by measuring the distance a snow or abrasive cone [MECH ENG] An abrasive sintice surface falls during the observation period. ered or shaped into a solid cone to be rotated { əbla¯dəgraf } by an arbor for abrasive machining. { əbra¯s Ablock [CIV ENG] A hollow concrete masonry əv ko¯ n } block with one end closed and the other open abrasive disk [MECH ENG] An abrasive sintered and with a web between, so that when the block or shaped into a disk to be rotated by an arbor is laid in a wall two cells are produced. { a¯ for abrasive machining. { əbra¯səv disk } bla¨ k } abrasive jet cleaning [ENG] The removal of dirt Abney level See clinometer. { abne¯ levəl } from a solid by a gas or liquid jet carrying abraabnormal reading See abnormal time. { abno˙r sives to ablate the surface. { əbra¯səv jet əl re¯diŋ } kle¯niŋ }m abnormal time [IND ENG] During a time study, abrasive machining [MECH ENG] Grinding, drilan elapsed time for any element which is exces- ling, shaping, or polishing by abrasion. sively longer or shorter than the median of the { əbra¯səv məshe¯niŋ } elapsed times. Also known as abnormal read- abreast milling [MECH ENG] A milling method ing. { abno˙rməl tı¯m } in which parts are placed in a row parallel to the abort branch [CONT SYS] A branching instruc- axis of the cutting tool and are milled simultanetion in the program controlling a robot that ously. { əbrest miliŋ } causes a test to be performed on whether the abreuvoir [CIV ENG] A space between stones in tool-center point is properly positioned, and to masonry to be filled with mortar. { abru¨ vwa¨r } Copyright 2003 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use.
ABS ABS See antilock braking system and not proceed until there is a change in the Also known as stop and stay re ITHERMo 1. The tem- Also known as terrain-clearance indicator I'abs, lut altim adar 273 16C (the Kelvin scale) or in Fahrenhe nab l surface, either land or water of a planet 459.69F (the Rankine scale). I'abso into sections or blocks upon which a train may until the preceding train has left. bs ut 'tem pra-chur ska ock s bo itted within a block section during a give absolute efficiency ENG Acous The ratio of yu ng EN der specified co I'ab-s, luit ]fish-anse ototype of the international kilogram. I'ab account; in contrast with apparent expansion body would have nt ENGI An instrument absor ENG Equipment in which a orbed mple phys urements on the instru- ment. I'ab-s, lut 'in-stromont an object from the energy prevent reflection of lectively transmit one or olute manometer E MECH I ideal able physical constants of the instrument. otion system used for absorbing refrig. se to a perfect vacuum. (ab sp, lu absolute pressure transducer ENG spill and aid in its removal. f absorb ale See absolute temperature scale absolute specific gravity MECH The ratio of to drain through an impermeable iven temperature. [ab"s2厘甲)gaPs: beds eluent orasepuctan a full stop ab sorp
ABS ABS See antilock braking system. and not proceed until there is a change in the absolute altimeter [ENG] An instrument which signal. Also known as stop and stay. { ab employs radio, sonic, or capacitive technology səlu¨t sta¨p } to produce on its indicator the measurement of absolute temperature [THERMO] 1. The temdistance from the aircraft to the terrain below. perature measurable in theory on the thermodyAlso known as terrain-clearance indicator. namic temperature scale. 2. The temperature { absəlu¨t altimədər } in Celsius degrees relative to the absolute zero absolute altitude [ENG] Altitude above the ac- at 273.16C (the Kelvin scale) or in Fahrenheit tual surface, either land or water, of a planet or degrees relative to the absolute zero at natural satellite. { absəlu¨t altətu¨ d } 459.69F (the Rankine scale). { absəlu¨t absolute blocking [CIV ENG] A control arrange- temprəchu¨r } ment for rail traffic in which a track is divided absolute temperature scale [THERMO] A scale into sections or blocks upon which a train may with which temperatures are measured relative not enter until the preceding train has left. to absolute zero. Also known as absolute scale. { absəlu¨t bla¨ kiŋ } { absəlu¨t temprəchu¨r ska¯l } absolute block system [CIV ENG] A block sys- absolute volume [ENG] The total volume of the tem in which only a single railroad train is per- particles in a granular material, including both mitted within a block section during a given pe- permeable and impermeable voids but excluding riod of time. { absəlu¨t bla¨ k sistəm } spaces between particles. { absəlu¨t va¨l absolute efficiency [ENG ACOUS] The ratio of yu¨ m } the power output of an electroacoustic trans- absolute weighing [ENG] Determination of the ducer, under specified conditions, to the power mass of a sample and expressing its value in output of an ideal electroacoustic transducer. units, fractions, and multiples of the mass of the { absəlu¨t əfishənse¯ } prototype of the international kilogram. { ab absolute expansion [THERMO] The true expan- səlu¨t wa¯iŋ } sion of a liquid with temperature, as calculated absolute zero [THERMO] The temperature of when the expansion of the container in which 273.16C, or 459.69F, or 0 K, thought to be the volume of the liquid is measured is taken into the temperature at which molecular motion vanaccount; in contrast with apparent expansion. ishes and a body would have no heat energy. { absəlu¨t ikspanshən } { absəlu¨t ziro¯ } absolute instrument [ENG] An instrument absorber [CHEM ENG] Equipment in which a which measures a quantity (such as pressure gas is absorbed by contact with a liquid. or temperature) in absolute units by means of [ELECTR] A material or device that takes up and simple physical measurements on the instru- dissipates radiated energy; may be used to shield ment. { absəlu¨t instrəmənt } an object from the energy, prevent reflection of absolute magnetometer [ENG] An instrument the energy, determine the nature of the radiation, used to measure the intensity of a magnetic field or selectively transmit one or more components without reference to other magnetic instru- of the radiation. [ENG] The surface on a solar ments. { absəlu¨t magnəta¨mədər } collector that absorbs the solar radiation. absolute manometer [ENG] 1. A gas manome- [MECH ENG] 1. A device which holds liquid for ter whose calibration, which is the same for all the absorption of refrigerant vapor or other ideal gases, can be calculated from the measur- vapors. 2. That part of the low-pressure side of able physical constants of the instrument. an absorption system used for absorbing refrig- 2. A manometer that measures absolute pres- erant vapor. { əbso˙rbər } sure. { absəlu¨t məna¨mədər } absorber capacity [CHEM ENG] During natural absolute pressure gage [ENG] A device that gas processing, the maximum volume of the gas measures the pressure exerted by a fluid relative that can be processed through an absorber withto a perfect vacuum; used to measure pressures out alteration of specified operating conditions. very close to a perfect vacuum. { absəlu¨t { əbso˙rbər kəpasəde¯ } preshər ga¯j } absorber plate [ENG] A part of a flat-plate solar absolute pressure transducer [ENG] A device collector that provides a surface for absorbing that responds to absolute pressure as the input incident solar radiation. { əbso˙rbər pla¯t } and provides a measurable output of a nature absorbing boom [CIV ENG] A device that floats different than but proportional to absolute pres- on the water and is used to stop the spread of sure. { absəlu¨t preshər tranzdu¨sər } an oil spill and aid in its removal. { əbso˙rb absolute scale See absolute temperature scale. iŋ bu¨ m } { absəlu¨t ska¯l } absorbing well [CIV ENG] A shaft that permits absolute specific gravity [MECH] The ratio of water to drain through an impermeable stratum the weight of a given volume of a substance in to a permeable stratum. { əbso˙rbiŋ wel } a vacuum at a given temperature to the weight absorption bed [CIV ENG] A sizable pit conof an equal volume of water in a vacuum at a taining coarse aggregate about a distribution given temperature. { absəlu¨t spəsifək grav pipe system; absorbs the effluent of a septic tank. əde¯ } { əbso˙rpshən bed } absolute stop [CIV ENG] A railway signal which absorption column See absorption tower. indicates that the train must make a full stop { əbso˙rpshən ka¨ləm } 2
acceleration of free fall absorption cycle the form of falling droplets. Also known as ab queous solution at elevated gate about a distribution tile absequently reabsorbed at low pressure, dis- hrough which septic-tank effluent placing the need for a compressor. ab sorp- ve beneath earth. ab'sorp shan trench I by a surface to the tot n(p4以切 ack Clv ENGI One of由以时出 absorption-emission pyrometer ENGI A ther- other on any pair of rails. ('apt,trak orbed by the gas, ( ab sorp shan a' mish. absorption field ICI ENGI Tn 90)with respect to the grain in the other. = known as disposal field. shan feld I from opposite sides /geometer Also emi hat they contact. abat in'ten- GI Hastening the deter- measured by means of the absorption of vapor product by a laboratory procedu by a hygroscopic chemical. [ shan rad-ad'aj-in sorption loss ICIV ENGI The quantity because of absorption by soil and rocks. normal operating life. I ak'sel-ar, adod ' If absorption meter ENG An instrument de- photocell or other light detector. [abso the resistance of a paint film or Irface to weathering. ak'sel-ar, a-dadweth- 含品的 to the elect sorp-shan plant j cceleration MECHI The rate of change of elocity with respect to time. i ak, sel-3'1 CH ENGI A ma lerations of parts of a mechanism on of liquid ammonia into gas and absorption evaporates. I ab'sorp-shan ra, f ak sel.a'ra. rption system M by an absorber and is then, with the application of heat, released in a generator. angular acceleration. I ak,sel-a'ra shan'mez cceleration of free fall See acceleration of gravity. a rising gas is partially absorbed by a liquid in
acceleration of free fall absorption cycle [MECH ENG] In refrigeration, the form of falling droplets. Also known as abthe process whereby a circulating refrigerant, for sorption column. { əbso˙rpshən tau˙ər } example, ammonia, is evaporated by heat from absorption trench [CIV ENG] A trench conan aqueous solution at elevated pressure and taining coarse aggregate about a distribution tile subsequently reabsorbed at low pressure, dis- pipe through which septic-tank effluent may placing the need for a compressor. { əbso˙rp move beneath earth. { əbso˙rpshən trench } shən sı¯kəl } absorptivity [THERMO] The ratio of the radiaabsorption dynamometer [ENG] A device for tion absorbed by a surface to the total radiation measuring mechanical forces or power in which incident on the surface. { əbso˙rptivəde¯ } the mechanical energy input is absorbed by fric- Abt track [CIV ENG] One of the cogged rails tion or electrical resistance. { əbso˙rpshən used for railroad tracking in mountains and so dı¯nəma¨mədər } arranged that the cogs are not opposite one an- absorption-emission pyrometer [ENG] A ther- other on any pair of rails. { apt trak } mometer for determining gas temperature from abutment [CIV ENG] A surface or mass provided measurement of the radiation emitted by a cali- to withstand thrust; for example, end supports brated reference source before and after this ra- of an arch or a bridge. { əbətmənt } diation has passed through and been partially abutting joint [DES ENG] A joint which connects absorbed by the gas. { əbso˙rpshən əmishən two pieces of wood in such a way that the direc- pı¯ra¨mədər } tion of the grain in one piece is angled (usually absorption field [CIV ENG] Trenches containing at 90) with respect to the grain in the other. coarse aggregate about distribution pipes per- { əbətiŋ jo˙ int } mitting septic-tank effluent to seep into sur- abutting tenons [DES ENG] Two tenons inserted rounding soil. Also known as disposal field. into a common mortise from opposite sides so { əbso˙rpshən fe¯ld } that they contact. { əbətiŋ tenənz } absorption hygrometer Also known as chemical ac See alternating current. hygrometer. [ENG] An instrument with which accelerated aging [ENG] Hastening the deteri- the water vapor content of the atmosphere is oration of a product by a laboratory procedure measured by means of the absorption of vapor in order to determine long-range storage and by a hygroscopic chemical. { əbso˙rpshən use characteristics. { akseləra¯dəd a¯jiŋ } hı¯gra¨mədər } accelerated life test [ENG] Operation of a de- absorption loss [CIV ENG] The quantity of water vice, circuit, or system above maximum ratings that is lost during the initial filling of a reservoir to produce premature failure; used to estimate because of absorption by soil and rocks. normal operating life. { akseləra¯dəd lı¯f { əbso˙rpshən lo˙ s } test } absorption meter [ENG] An instrument de- accelerated weathering [ENG] A laboratory test signed to measure the amount of light transmit- used to determine, in a short period of time, ted through a transparent substance, using a the resistance of a paint film or other exposed photocell or other light detector. { əbso˙rp surface to weathering. { akseləra¯dəd weth shən me¯dər } əriŋ } absorption number [ENG] A dimensionless accelerating incentive See differential piece-rate group used in the field of gas absorption in a wetted-wall column; represents the liquid side system. { akseləra¯diŋ insentiv} mass-transfer coefficient. { accelerating potential [ELECTR] The energy po- əbso˙rpshən tential in electron-beam equipment that imparts nəmbər } additional speed and energy to the electrons. absorption plant [CHEM ENG] A facility to re- { akseləra¯diŋ pətenshəl } cover the condensable portion of natural or refin- acceleration [MECH] The rate of change of ery gas. { əbso˙rpshən plant } absorption process velocity with respect to time. { akseləra¯ [CHEM ENG] A method in which light oil is introduced into an absorption shən } acceleration analysis [MECH ENG] A mathe- tower so that it absorbs the gasoline in the rising wet gas; the light oil is then distilled to separate matical technique, often done graphically, by the gasoline. { əbso˙rpshən pra¨səs } which accelerations of parts of a mechanism are absorption refrigeration [MECH ENG] Refriger- determined. { akseləra¯shən ənaləsəs } ation in which cooling is effected by the expan- acceleration-error constant [CONT SYS] The rasion of liquid ammonia into gas and absorption tio of the acceleration of a controlled variable of the gas by water; the ammonia is reused after of a servomechanism to the actuating error when the water evaporates. { əbso˙rpshən rəfrij the actuating error is constant. { akseləra¯ əra¯shən } shən erər ka¨nstənt } absorption system [MECH ENG] A refrigeration acceleration measurement [MECH] The techsystem in which the refrigerant gas in the evapo- nique of determining the magnitude and direcrator is taken up by an absorber and is then, with tion of acceleration, including translational and the application of heat, released in a generator. angular acceleration. { akseləra¯shən mezh { əbso˙rpshən sistəm } ərmənt } absorption tower [ENG] A vertical tube in which acceleration of free fall See acceleration of gravity. a rising gas is partially absorbed by a liquid in { akseləra¯shən əv fre¯ fo˙ l } 3
acceleration of gravity of gravity MECHI The accelera- acceptable quality level IND ENGI The maxi- ion or test of a product ith respe the item. Abbreviated AOL. (a mical reference point performance of a task. I ak,sel-'ra-shon ety of terms, for example, number of failure ure acceleration tolerance |ENGI The degree to breviated ARL. Iak'sep-ta-bol r, i-o'bil-3-de criteria IND ENGI Standards dging the acceptability of manufactured items In accelerator CH EN ce for varying the speed of an automotive vehicle by varying ac supply of fuel. I ak'sel-a, rad-ar inspect for de The jet through anat rejected. I ak'sep-tans sam plig/cepted vehicle with increased power output. ak sel-a,radar accelerator CH ENGI The linkage ons test j ight to pass without obstruction from a given tion control of an automotive vehidle. I aksel- the sea or a public highway.['ak,ses ve. such as access door BUILD A provision for access to uel mixture during acceleration. I ak'sel-2 raa pipes to provide access when a blockage c access flooring See raised flooring. 'ak, ses point on she earth during an earthquake or for hole. I'ak, ses hol j ng any other type of acceleration. i ak accessory n:may be used for testing, ad- pable of imparting acceleration. ak,selat IV ENGI A route, usually paved entire human body or a part of the body in GI A tunnel prowided for performance of a task, ak,sel-a'ram-3 accent lighting Icv ENGl Directional lighting that classifies accidents under eight defecti rking conditions and nine improper working methods, equ isment, or consumable products. of ex sureing i'akrses dpet mire- n南 i ak, sep-ta'bil-a-de accident severity rate IND ENG The number of
acceleration of gravity acceleration of gravity [MECH] The accelera- acceptable quality level [IND ENG] The maxition imparted to bodies by the attractive force mum percentage of defects that has been deterof the earth; has an international standard value mined tolerable as a process average for a samof 980.665 cm/s pling plan during inspection or test of a product 2 but varies with latitude and elevation. Also known as acceleration of free with respect to economic and functional requirements of the item. Abbreviated AQL. { ak fall; apparent gravity. { akseləra¯shən əv ¦septəbəl kwa¨ləde¯ levəl } gravəde¯ } acceptable reliability level [IND ENG] The re- acceleration signature [IND ENG] A printed re- quired level of reliability for a part, system, cord that shows the pattern of acceleration and device, and so forth; may be expressed in a vari- deceleration of an anatomical reference point ety of terms, for example, number of failures in the performance of a task. { akseləra¯shən allowable in 1000 hours of operating life. Ab- signəchər } breviated ARL. { ak¦septəbəl rəlı¯əbiləde¯ acceleration tolerance [ENG] The degree to levəl } which personnel or equipment withstands accel- acceptance criteria [IND ENG] Standards of eration. { akseləra¯shən ta¨lərəns } judging the acceptability of manufactured items. acceleration voltage [ELECTR] The voltage be- { akseptəns krı¯te¯re¯ə } tween a cathode and accelerating electrode of acceptance number [IND ENG] The maximum an electron tube. { akseləra¯shən vo¯ ltəj } allowable number of defective pieces in a sample accelerator [MECH ENG] A device for varying of specified size. { akseptəns nəmbər } the speed of an automotive vehicle by varying acceptance sampling [IND ENG] Taking a samthe supply of fuel. { akseləra¯dər } ple from a batch of material to inspect for deaccelerator jet [MECH ENG] The jet through termining whether the entire lot will be accepted which the fuel is injected into the incoming air or rejected. { akseptəns sampliŋ } acceptance test [IND ENG] A test used to deter- in the carburetor of an automotive vehicle with mine conformance of a product to design specifi- rapid demand for increased power output. { ak cations, as a basis for its acceptance. { aksep seləra¯dər jet } təns test } accelerator linkage [MECH ENG] The linkage acceptor [CHEM ENG] A calcined carbonate connecting the accelerator pedal of an automo- used to absorb the carbon dioxide evolved dur- tive vehicle to the carburetor throttle valve or ing a coal gasification process. { akseptər } fuel injection control. { akseləra¯dər liŋkij } access [CIV ENG] Freedom, ability, or the legal accelerator pedal [MECH ENG] A pedal that op- right to pass without obstruction from a given erates the carburetor throttle valve or fuel injec- point on earth to some other objective, such as tion control of an automotive vehicle. { aksel the sea or a public highway. { akses } əra¯dər pedəl } access door [BUILD] A provision for access to accelerator pump [MECH ENG] A small cylinder concealed plumbing or other equipment without and piston controlled by the throttle of an auto- disturbing the wall or fixtures. { akses do˙r } motive vehicle so as to provide an enriched air- access eye [CIV ENG] A threaded plug fitted fuel mixture during acceleration. { akseləra¯d into bends and junctions of drain, waste, or soil ər pəmp } pipes to provide access when a blockage occurs. accelerogram [ENG] A record made by an ac- See cleanout. { akses ı¯ } celerograph. { akselərəgram } access flooring See raised flooring. { akses accelerograph [ENG] An accelerometer having floriŋ } provisions for recording the acceleration of a access hole See manhole. { akses ho¯ l } point on the earth during an earthquake or for accessory [MECH ENG] A part, subassembly, or recording any other type of acceleration. { ak assembly that contributes to the effectiveness selərəgraf } of a piece of equipment without changing its accelerometer basic function; may be used for testing, ad- [ENG] An instrument which measures acceleration or gravitational force ca- justing, calibrating, recording, or other purposes. { aksesəre¯ } pable of imparting acceleration. { akseləra¨m access road [CIV ENG] A route, usually paved, ədər } that enables vehicles to reach a designated facil- accelerometry [IND ENG] The quantitative de- ity expeditiously. { akses ro¯ d } termination of acceleration and deceleration in access tunnel [CIV ENG] A tunnel provided for the entire human body or a part of the body in an access road. { akses tənəl } the performance of a task. { akseləra¨mə accident-cause code [IND ENG] Sponsored by dre¯ } the American Standards Association, the code accent lighting [CIV ENG] Directional lighting that classifies accidents under eight defective which highlights an object or attracts attention working conditions and nine improper working to a particular area. { aksent lı¯diŋ } practices. { aksədent ¦ko˙z ko¯ d } acceptability [ENG] State or condition of meet- accident frequency rate [IND ENG] The number ing minimum standards for use, as applied to of all disabling injuries per million worker-hours methods, equipment, or consumable products. of exposure. { aksədent frekwənse¯ ra¯t } { akseptəbiləde¯ } accident severity rate [IND ENG] The number of 4