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`AW-H
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`LENTIFIL
`Nic
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`Fifth Edition
`
`
`
`Sybil P. Parker
`Editor in Chief
`
`,
`Auckland
`Montreal
`
`New York
`Caracas
`Bogota
`New Delhi
`
`McGraw-Hill, Inc.
`San Francisco
`Washington, D.C.
`Lisbon
`London
`Madrid
`San Juan
`Singapore
`Sydney
`
`Milan
`Mexico City
`Tokyo
`Toronto
`
`Teradata, Exh. 1009, p. 1 of 3
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`Teradata, Exh. 1009, p. 1 of 3
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`

`

`
`
`On the cover: Photomicrograph of crystals of vitamin B,.
`(Dennis Kunkel, University of Hawaii)
`
`Included in this Dictionary are definitions which have been published previously in the following works: P. B.
`Jordain, Condensed Computer Encyclopedia, Copyright ©: 1969 by McGraw-Hill, Inc. All-rights reserved. J.
`Markus, Electronics and Nucleonics Dictionary, 4th ed., Copyright © 1960, 1966,-1978 by McGraw-Hill, Inc.
`All rights reserved. J. Quick, Artists’ andIlustrators’ Encyclopedia, Copyright ©.1969 by McGraw-Hill,Inc. All
`rights reserved. Blakiston’s GouldMedical Dictionary, 3d ed., Copyright © 1956, 1972 by McGraw-Hill, Inc. All
`rights reserved. T. Baumeister and L. S. Marks, eds., Standard Handbook for Mechanical Engineers, 7th ed.,
`Copyright © 1958, 1967 by McGraw-Hill, Inc. All rights reserved.
`‘
`In addition, material has been drawn from the following references: R. E. Huschke, Glossary of Meteorology,
`American Meteorological Society, 1959; U.S. Air Force Glossary ofStandardized Terms, AF Manual11-1, vol.
`1, 1972; Communications-Electronics Terminology, AF Manual 11-1, vol. 3, 1970; W. H: Allen, ed., Dictionary
`of Technical Terms for Aerospace Use, 1st ed., National Aeronautics and Space Administration, 1965; J. M.
`Gilliland, Solar-Terrestrial Physics: A Glossary ofTerms and Abbreviations, Royal Aircraft Establishment Tech-
`nical Report 67158, 1967; Glossary ofAir Traffic Control Terms, Federal Aviation Agency; A Glossary ofRange
`Terminology, White Sands Missile Range, New Mexico, National:Bureau of Standards, AD 467-424, A DOD
`Glossary ofMapping, Charting and Geodetic Terms, Ist ed., Departmentof Defense, 1967; P. W. Thrush, comp.
`and ed., A Dictionary ofMining, Mineral, andRelated Terms, Bureau ofMines, 1968; Nuclear Terms: A Glossary,
`2d ed., Atomic Energy Commission; F. Casey,ed., Compilation of Terms in Information Sciences Technology,
`Federal Council for Science and Technology, 1970; Glossary ofS:tinfo Terminology, Office ofAerospaceResearch,
`US. Air Force, 1963; Naval Dictionary ofElectronic, Technical, and Imperative Terms, Bureau of Naval Person-
`nel, 1962; ADP Glossary, Department of the Navy, NAVSO P-3097.
`
`McGRAW-HILL DICTIONARY OF SCIENTIFIC AND TECHNICAL TERMS,
`Fifth Edition
`Copyright © 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill,Inc. Allrights reserved. Printed in the United
`States of America. Except as permitted under the UnitedStates Copyright Act of 1976, no part of this publication
`may be reproducedordistributed in any form or by any means,or stored in a database or retrieval system, without
`the prior written permission of the publisher.
`
`34567890
`
`DOW/DOW
`
`998765
`
`ISBN 0-07-042333-4
`
`Library of Congress Cataloging-in-Publication Data
`
`McGraw-Hill dictionary ofscientific and technical terms /
`Sybil P. Parker, editor in chief..—Sth ed.
`p.
`cm.
`ISBN 0-07-042333-4
`1. Science—Dictionaries.
`I. Parker, Sybil P.
`Q123.M34
`1993
`503——dc20
`
`2. Technology—Dictionaries.
`
`93-34772CIP
`
`INTERNATIONAL EDITION
`
`Copyright © 1994. Exclusive rights by McGraw-Hill, Inc. for manufacture and export. This book cannotbe re-
`exported from the country to which it is consigned by McGraw-Hill. The International Editionis not available in
`North America.
`
`When orderingthis title, use ISBN 0-07-113584-7.
`
`Teradata, Exh. 1009, p. 2 of 3
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`Teradata, Exh. 1009, p. 2 of 3
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`drive shoe
`616|drill jig
`
`
`
`soil
`
`
`
`
`
`or ore body.
`[psycH] A strong impetusto behaviororactive
`drilljig [mECHENG]Adevice fastenedto the work in repetition
`striving.
`{ driv }
`drilling to position and guidethe drill.-{ ‘dril ,jig }
`drive chuck [MECH ENG] A mechanism atthe lower end of a
`drill jumbo [min ENG] A mobile carriage or platform fitted
`diamond-drill drive rod on the swivel head by meansof which
`with mechanical arms upon whichseveraldrilling machines are
`the motionofthe drive rod can be transmittedto the drill string,
`mounted.
`{ ‘dril ,jom-bo }
`/
`{ driv ,chak }
`,
`drilllog [ENG]
`1. A record of the events and features of the
`drive control See horizontal drive control.
`{ ‘driv kan,trol}
`formations penetrated during boring. Also known as boring
`drive fit
`[DEs ENG] A fit in which the larger (male) part is
`log.
`2. A record of all occurrences duringdrilling that might
`pressed into a smaller (female) part; the assembly mustbe ef-
`help in a complete logging of the hole or in determining the cost
`fected throughthe application of anexternal force.
`{ ,driv,fit}
`of the drilling.
`{ ‘dril lag }
`drivehead [ENG] A cap fitted over the end of a mechanical
`drillout
`[ENG] 1.To complete one or more boreholes. 2. To
`part to protectit while it is.being driven.
`{
`'driv,hed }
`penetrate-or remove a borehole obstruction.
`3. To locate and
`driveless workstation [comput sci] A computerorterminal
`delineate the area of a subsurface ore body or of petroleum by
`in a local area network that does not have its own disk drives
`aseries of boreholes.
`{ \dril ‘aut }
`and relies: on a central mass storage facility for information
`drill-over
`[ENG] The actor processofdrilling around a casing
`storage.
`{ ‘driv-los 'work,stashon }
`:
`lodged in a borehole.
`{ ‘dril ,O-ver }
`drive light
`[comput sci] A lamp on the front of a disk driv
`drilipipe [min ENG]Apipe used for driving a revolving drill
`that lights to indicate when the unit is reading or writing data.
`bit, used especially in drilling wells; consists of a casing within
`{ ‘driv lit }
`whichtubingis run to conductoil or gas to ground level; drilling
`In an automotive vehicle, the groupof
`driveline [mecH ENG]
`mud flowsin the annular space between casing and tubing during
`parts, including the universal joint andthe drive shaft, that con-
`the drilling operation.
`{ ‘dril pip }
`nect the transmission with the driving wheels.
`{ ‘driv,lin }
`{ ‘dril {point ,gaj }
`drill point gage See drill grinding gage.
`driven array [ELECTROMAG] An antennaarray consisting of
`drillpress [MECH ENG]Adrilling machine in whicha vertical
`a numberof driven elements, usually half-wave dipoles,fed in
`drill movesinto the work, which is stationary.
`{ ‘dril pres }
`phaseor out of phase froma common source.
`{ ;driv-on 0'xa}
`drillrod [enc] The longrodthat drivesthedrill bit in drilling
`driven blocking oscillator See monostable blockingoscillator.
`boreholes.
`{ ‘dril ,rad }
`{ \driv-an 'blik-in 'as-o lad-or }
`drill runner
`[MN ENG] A tunnel miner who operates tock
`driven caisson [civ ENG] A caisson formed by driving a
`DRIVEN CAISSON
`drills:
`{ ‘dril ,ron-ar }
`cylindrical steel shell into the ground witha pile-drivinghammer
`drill sleeve [ENG]Atapered, hollow steel shaft designed to
`andthenplacingconcreteinside;the shell may be removed when
`fit the tapered shank ofa cutting tool to adaptit to the drill press
`concrete sets.
`{ {driv-on 'ka,san }
`spindle.
`.{ ‘dril slév }
`cylindrical
`driven element.[ELECTROMAG] An antenna elementthatis
`steel casing ~~~
`drillsocket
`[ENG] An adapterto fit a tapered shank drill to a
`directly connected to the transmission line.
`{ {driv-on 'el-a
`“oR
`taper hole that is larger than that in thedrill press spindle.
`{ ‘dril
`ment}
`\sak-ot }
`[MECH ENG] The memberofa pair of gearsto
`driven gear
`[MET] Steel with at least 0.85% carbon content
`drill steel
`which motion and powerare transmitted by the other.
`{ (driv:
`madeby the electric furnace process... Formerly known as cru-
`an. ‘gir }
`cible steel, when madeby the crucible process.
`{ ‘dril ,stél }
`driven snow [MBTEOROL], Snow which has been moved by
`drill stem See bent sub.
`{ ‘dril ,stem }
`wind and collected into snowdrifts.
`{
`|driv-on ‘snd }
`drill-stem test
`[peTRO ENG] Bottom-hole pressure informa~
`drive pattern
`[comMUN]
`In a facsimile system, undesired
`tion obtained and used to determine formation productivity.
`pattern of density variations caused by periodic errors in the
`{ ‘dril ‘stem ,test }
`position of the recording spot.
`{ ‘driv ,pad-orn }
`drill string [MECH ENG] The assemblage of dnill rods, core
`drivepipe
`[ENG] A thick-walled casing pipe that is driven
`barrel, andbit,or of drill rods, drill collars, and bit in a borehole,
`through overburdenor into a deep drill hole to prevent caving.
`which is connected to and rotated by the drill collar of the
`{
`'driv, pip}
`borehole.
`{ ‘dril ,strin }
`:
`Thepulley that drives a conveyor
`drive pulley [MecH ENG]
`drillweave [TEXT] Special fabric sometimesused in filtration;
`belt..{ ‘driv pale }
`a three-harness, warp-face twill weave, having the two-up and
`drive pulse [ELECTR].An electrical pulse which induces a
`
`one-downtwill effect.
`{ ‘dril ,wév }
`magnetizing force in an element of a magnetic core storage,
`Driionematoidea
`[inv zoo]. A superfamily of. parasitic
`reversing, the polarity of the core.
`{ ‘driv pols }
`nematodesin the subclass Spiruria..
`{.,driJ6,nem-s'tdidé-9 }
`driver
`[computsci] A sequence of program instructionsthat
`controls an imput/output device such as a tape drive or disk
`drip [arcu] See hoodmold..
`[Hyp] Condensedor otherwise
`collected moisture falling from leaves, twigs, and so forth.
`drive.
`[ELECTR] The amplifier stage preceding the output
`stage in a receiver or transmitter.
`[ENG ACOUS] The portion
`[MATER]
`1. Oil which comes through the cloth of a. paraffin
`wax press.
`2. Filter drainings too dark to be includedin filter
`of ahorn loudspeakerthat converts electrical energy into acous-
`tical energy and feedsthe acoustical energy to the small end of
`stock.
`[PETROENG] A discharge mechanism installed ata low
`point in a gas transmission line to collect and remove liquid
`the hom.
`{ ‘dri-vor }
`driver element
`[ELECTROMAG] Antennaarray element that
`accumulations. Also known as blowcase.
`—{ drip }
`receives powerdirectly from the transmitter.
`{
`'dri-vor ,el’o
`drip cap [BUILD] A horizontal molding installed over the
`ment }
`frame for a door or window to direct water away from the frame.
`driverod.[ENG]:Hollow shaft in the swivel head ofa diamond-
`{ ‘drip ,kap }
`drill machine through which energyis transmitted from the drill
`drip-dry [TExT] Ofa fabric, shedding water or moisture rap-
`motorto the drill string. Also known asdrive spindle.
`{ ‘driv
`idly without squeezing, spinning, or wringing.
`{ ‘drip dri}
`dripedge [sup] A metal strip that extends beyondthe other
`wad }
`driversweep [ELECTR] Sweeptriggered only by an incoming
`parts of the roofandis used to direct rainwater off.
`{ ‘drip ,ej }
`signal ortrigger.
`{ 'drtvor swép }
`dripping drop atomization,
`[Hyp] A type of natural gravi-
`driver transformer
`[ELECTR] A transformerin the input cir-
`tational atomization process in which there is periodic emission
`cuit of an amplifier, especially in the transmitter.
`{ ‘driver
`of drops from the bottom side of a surface to whicha liquid is
`tranz'for-mor}
`,
`fed continuously, as in dripping of water from leaves.
`{ \drip:
`drive sampling.
`[ENG]
`Theact or process of driving a tubular
`in {drip ,ad-o-me'zashon }
`device into soft rock material for obtaining dry samples.
`{ ‘driv
`dripstone [GroL] Acavefeature, such asa stalagmite, which
`samplin }
`is formedbyprecipitation of calcium carbonate or another min-
`drivescrew [DES ENG] A screw that is driven all the way 1,
`eral from dripping water.
`{ ‘drip,ston }
`or nearly all the way in, with a hammer.
`{ 'driv,skrii }
`drive [ELECTR] See excitation.
`[MECH ENG] The means by
`drive shaft
`[MECH ENG] A shaft which transmits power from
`which a machine is given motion or power (as in steam drive,
`a motoror engine to the rest of a machine.
`{ ‘driv shaft }
`diesel-electric drive), or by which poweris transferred from one
`drive shoe [DES ENG] A sharp-edgedsteel sleeve attached to
`part of amachineto another(as in gear drive, belt drive).
`[MIN
`the bottom of a drivepipeor casing to act as a cutting edge and
`ENG]
`1. To excavate in a horizontalor inclined plane. 2.A
`protector..
`{ ‘driv ,shii }
`horizontal underground tunnelalongorparallel to a lode, vein,
`
`hard
`material
` Ft)
`or rock \at
`
`Driven caisson, top view and
`cross-section from the side.
`
`
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`Teradata, Exh. 1009, p. 3 of 3
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