`
`fillll Ellilillll
`
`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
`Toronto
`Tokyo
`
`Teradata, Exh. 1009, p. 1 of3
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`5§
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`Teradata, Exh. 1009, p. 1 of 3
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`
`
`On the cover: Photomicrograph of crystals of vitamin B1.
`(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. I.
`Markus, Electronics and Nucleonics Dictionary, 4th ed., Copyright © 1960, 1966,1978 by McGraw—Hill, Inc.
`All rights reserved. I. Quick, Artists’ and Illustrators’ Encyclopedia, Copyright © 1969 by McGraw—Hill, Inc. All
`rights reserved. Blakiston’s Gould Medical 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 of Standardized Terms, AF Manual 11-1, 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, 1st ed., Department of Defense, 1967; P. W. Thrush, comp.
`and ed., A Dictionary ofMining, Mineral, andRelated Terms, Bureau of Mines, 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 ofStinfo Terminology, Office ofAerospace Research,
`U.S. 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. All rights reserved. Printed in the United
`States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication
`may be reproduced or distributed 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—Hil1 dictionary of scientific and technical terms /
`Sybil P. Parker, editor in chief..—5th ed.
`p.
`cm.
`ISBN 0-07-042333-4
`1. Science—Dictionaries.
`1. 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 cannot be re-
`exported from the country to which it is consigned by McGraw-Hill. The International Edition is not available in
`North America.
`
`When ordering this 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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`

`515
`
`drill jig
`
`
`
`drive sheep,
`
`DRIVEN CAISSON
`
`cylindrical
`steel casing x
`
`soil
`
`hard
`material
`or rock\"7T[._ L
`Driven caisson, top view and
`cross—section from the side.
`
`drill jig [MECH ENG] A device fastened to the work in repetition
`drilling to position and guide the drill.
`{
`'dril ,jig }
`drill jumbo [MIN ENG] A mobile carriage or platform fitted
`with mechanical arms upon which several drilling machines are
`mounted.
`{
`'dril ,j9m-b6 }
`_
`drill log
`[ENG]
`1. A record of the events and features of the
`formations penetrated during boring. Also known as boring
`log.
`2. A record of all occurrences during drilling that might
`help in a complete logging of the hole or in determining the cost
`of the drilling.
`{
`'dril ,lag }
`drill out
`[ENG]
`1. To complete one or more boreholes. 2. To
`penetrate or remove a borehole obstruction.
`3. To locate and
`delineate the area of a subsurface ore body or of petroleum by
`a series of boreholes.
`{ jdril 'a1'1t }
`drill-over
`[ENG] The act or process of drilling around a casing
`lodged in a borehole.
`{
`'dril ,6~ver }
`drill pipe [MIN ENG] A pipe used for driving a revolving drill
`bit, used especially in drilling wells; consists of a casing within
`which tubing is run to conduct oil or gas to ground level; drilling
`mud flows in the annular space between casing and tubing during
`the drilling operation.
`{
`'dril ,pIp }
`'dril ,point ,gaj }
`{
`drill point gage See drill grinding gage.
`drill press [MECH ENG] A drilling machine in which a vertical
`drill moves into the work, which is stationary.
`{
`'dril ,pres }
`drill rod [ENG] The long rod that drives the drill bit in drilling
`boreholes.
`{ 'dril ,rad }
`drill runner
`[MIN ENG] A tunnel miner who operates rock
`drills.
`{
`'dril ,r9n-or }
`drill sleeve [ENG] A tapered, hollow steel shaft designed to
`fit the tapered shank of a cutting tool to adapt it to the drill press
`spindle.
`{
`'dril ,slev }
`drill socket
`[ENG] An adapter to fit a tapered shank drill to a
`taper hole that is larger than that in the drill press spindle.
`{ 'dril
`,s'ak-at }
`[MET] Steel with at least 0.85% carbon content
`drill steel
`made by the electric furnace process. Formerly known as cru-
`cible steel, when made by the crucible process.
`[
`'dril ,stel }
`drill stem See bent sub.
`{ 'dril ,stem }
`drill-stem test
`[PETRO ENG] Bottom-hole pressure informa-
`tion obtained and used to determine formation productivity.
`{
`'dril ‘stem ,test }
`drill string [MECH ENG] The assemblage of drill rods, core
`barrel, and bit, or of drill rods, drill collars, and bit in a borehole,
`which is connected to and rotated by the drill collar of the
`borehole.
`{
`'dril ,st1i13 }
`I
`drill weave [TEXT] Special fabric sometimes used in filtration;
`a three—hamess, warp-face twill weave, having the two—up and
`one-down twill effect.
`{ 'dril ,wev }
`Drilonematoidea
`[INV zoo] A superfarnily of parasitic
`nematodes in the subclass Spiruria.
`{ ,dri-l6,nem-9'toid-e-9 }
`drip [ARCH] See hoodmold.
`[HYD] Condensed or otherwise
`collected moisture falling from leaves, twigs, and so forth.
`[MATER]
`1. Oil which comes through the cloth of a paraffin
`wax press.
`2. Filter drainings too dark to be included in filter
`stock.
`[PETRO ENG] A discharge mechanism installed at a low
`point in a gas transmission line to collect and remove liquid
`accumulations. Also known as blowcase.
`{ drip }
`drip cap [BUILD] A horizontal molding installed over the
`frame for a door or window to direct water away from the frame.
`l ‘drip .kap }
`drip-dry [TEXT] Of a fabric, shedding water or moisture rap-
`idly without squeezing, spinning, or wringing.
`{ ‘drip ,dri }
`drip edge [BUILD] A metal strip that extends beyond the other
`parts of the roof and is used to direct rainwater off.
`{ ‘drip ,ej }
`dripping drop atomization [HYD] A type of natural gravi-
`tational atomization process in which there is periodic emission
`of drops from the bottom side of a surface to which a liquid is
`fed continuously, as in dripping of water from leaves.
`{ {drip-
`ir_] }dr‘ap ,ad-9-m9'za-shan }
`dripstone [GEOL] A cave feature, such as a stalagmite, which
`is formed by precipitation of calcium carbonate or another min-
`eral from dripping water.
`{
`'drip,st6n }
`drive [ELECTR] See excitation.
`[MECH ENG] The means by
`which a machine is given motion or power (as in steam drive,
`diesel—elect1ic drive), or by which power is transferred from one
`part of a machine to another (as in gear drive, belt drive).
`[MIN
`ENG]
`1. To excavate in a horizontal or inclined plane.
`2. A
`horizontal underground tunnel along or parallel to a lode, vein,
`
`[PSYCH] A strong impetus to behavior or active
`or ore body.
`striving.
`{ drlv }
`drive chuck [MECH ENG] A mechanism at the lower end of a
`diamond-drill drive rod on the swivel head by means of which
`the motion of the drive rod can be transmitted to the drill string
`{ driv ,ch9k }
`,
`'driv ken,tr61 }
`drive control See horizontal drive control.
`{
`drive fit
`[DES ENG] A fit in which the larger (male) pan is
`pressed into a smaller (female) part; the assembly must be ef.
`fected through the application of an external force.
`{ ,driv Ifit }
`drivehead [ENG] A cap fitted over the end of a mechanica1
`part to protect it while it is being driven.
`{
`'driv,hed }
`driveless work station [COMPUT scr] A computer or terminal
`in a local area network that does not have its own disk drives
`and relies on a central mass storage facility for information
`storage.
`{
`'driv-los 'werk,sta-shon }
`,
`i drive light
`[COMPUT SCI] A lamp on the front of a disk driv
`that lights to indicate when the unit is reading or writing data.
`{
`'driv ,lit }
`In an automotive vehicle, the group of
`driveline [MECH ENG]
`parts, including the universal joint and the drive shaft, that con-
`nect the transmission with the driving wheels.
`{
`'driv,lin }
`driven array [ELECTROMAG] An antenna array Consisting of
`a number of driven elements, usually half-wave dipoles, fed in
`phase or out of phase from a common source.
`{ }driv'9n 9'15 ]
`driven blocking oscillator See monostable blocking oscillator.
`{ Ldriv-an jblak-in ‘as-e,lad-er }
`driven caisson [crv ENG] A caisson formed by driving a
`cylindrical steel shell into the ground with a pile—driving hammer
`and then placing concrete inside; the shell may be removed when
`concrete sets.
`{ jdriv-on 'ka,san }
`driven element
`[ELECTROMAG] An antenna element that is
`directly connected to the transmission line.
`{
`ldriv-an 'el-9-
`ment }
`[MECH ENG] The member of a pair of gears to
`driven gear
`which motion and power are transmitted by the other.
`{ [driv-
`en 'gir }
`driven snow [METEOROL]‘ Snow which has been moved by
`wind and collected into snowdrifts.
`{ {driv-an ‘sno }
`drive pattern
`[COMMUN]
`In a facsimile system, undesired
`pattern of density variations caused by periodic errors in the
`position of the recording spot.
`{ 'driv ,pad-em }
`drivepipe
`[ENG] A thick—walled casing pipe that is driven
`through overburden or into a deep drill hole to prevent caving.
`{
`'dfiV.PiP }
`drive pulley [MECH ENG] The pulley that drives a conveyor
`belt.
`{ 'drIv ,pu1-e }
`drive pulse
`[ELECTR] An electrical pulse which induces a
`magnetizing force in an element of a magnetic core storage,
`reversing the polarity of the core.
`{ ‘driv ,pels }
`driver
`[COMPUT SCI] A sequence of program instructions that
`controls an imput/output device such as a tape drive or disk
`drive.
`[ELECTR] The amplifier stage preceding the output
`stage in a receiver or transmitter.
`[ENG ACOUS] The portion
`of a horn loudspeaker that converts electrical energy into acous-
`tical energy and feeds the acoustical energy to the small end of
`the horn.
`{ 'drl-var }
`driver element
`[ELECTROMAG] Antenna array element that
`receives power directly from the transmitter.
`{
`'dri-var ,el-9'
`mant }
`drive rod [ENG] Hollow shaft in the swivel head of a diamond-
`drill machine through which energy is transmitted from the drill
`motor to the drill string. Also known as drive spindle.
`{ ‘driv
`,rad }
`driver sweep [ELECTR] Sweep triggered only by an incoming
`signal or trigger.
`{ 'dri-var ,swep }
`driver transformer
`[ELECTR] A transformer in the input cir-
`cuit of an amplifier, especially in the transmitter.
`{
`‘dri'V9f
`tranz'for-mar }
`.
`drive sampling [ENG] The act or process of driving a tubular
`device into soft rock material for obtaining dry samples.
`l ‘dill’
`,sarn-plirj }
`_
`drivescrew [DES ENG] A screw that is driven all the way In.
`or nearly all the way in, with a hammer.
`{
`'driv,skri'1 }
`drive shaft
`[MECH ENG] A shaft which transmits power from
`a motor or engine to the rest of a machine.
`[
`'driv ,shaft }
`drive shoe [DES ENG] A sharp-edged steel sleeve attached to
`the bottom of a drivepipe or casing to act as a cutting edge Blld
`protector.
`{ ‘driv ,shii }
`
`
`
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`Teradata, Exh. 1009, p. 3 of 3
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`Teradata, Exh. 1009, p. 3 of 3
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