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 0 1969 by McGraw-Hill, Inc. All rights reserved. J.
Markus, Electronics and Nucleonics Dictionary, 4Lh ed., Copyright 0 1960, 1966, 1978 by McGraw-Hill. Inc.
All rights reserved. 1. Quick, Artists'and Illustrators' Encyclopedia, Copyright (D 1969 by McGraw-Hill, Inc. All
rights reserved. Blakiston's Gould Medical Dictionary, 3d ed., Copyright (D 1956,1972 by McGraw-Hill, Inc. All
fights reserved. T. Baumeister and L. S. Marks, eds., Standard Handbook for Mechanical Engineers, 7th ed.,
Copyright n 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 I I -1, vol.
1, 1972; Communications-Electronics Terminology, AF Manual I 1- 1, vol. 3, 1970; W. H. Allen, ed., Dictionary
of Technical Terms for Aerospace Use, I st ed., National Aeronautics and Space Administration, 1965; J. M.
Gilliland, Solar-Terrestrial Physics: A Glossary of Terms and Abbreviations, Royal Aircraft Establishment Tech
nical Report 67158, 1967; Glossary ofAir Traffic Control Terms, Federal Aviation Agency; A Glossa" of Range
Terminology, White Sands Missile Range, New Mexico, National Bureau of Standards, AD 467424; A DOD
Glossar ' y of Mapping, Charting and Geodetic Terms, I st ed., Department of Defense, 1967; P. W. Thrash, comp.
and ed., A Dictionary of timing, Mineral, and Related 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 of Aerospace Research,
U.S. Air Force, 1963: Navol Dictionary of Electronic, Technical, and1ruperative 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 t 1994, 1989, 1984, 1979, 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 my to= or by my means. or stored in a database or retrieval system, without
the prior written permission of the publisher.
$7890 DOW/DOW 030201 00
ISBN 0-07-042333-4
Library of Congress Cataloging-in-Publication Data
McGraw-Hill dictionary of scientific and technical terms
Sybil P. Parker, editor in chief-Sth ed.
1). cm.
ISBN 0-07,042333-4
I.Science-Dictionaries. 2.Technology-Dictionwies.
1. Parker, Sybil P.
Q123.M34 1993
503-dc2O 93-34772
CIP
INTERNATIONAL EDITION
Copyright OP 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.
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