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electron

 - 6 dictionary results

e⋅lec⋅tron

  [i-lek-tron]
Use electron in a Sentence
–noun
1. Also called negatron. Physics, Chemistry. an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602 × 10−19 coulombs, a mass of 9.108 × 10−31 kilograms, and spin of 1/2 , and existing independently or as the component outside the nucleus of an atom.
2. Electricity. a unit of charge equal to the charge on one electron.
Origin:
term first suggested in 1891 by Irish physicist G. J. Stoney (1826–1911); electr(ic) + -on (from the names of charged particles, as ion, cation, anion ) with perh. accidental allusion to Gk lektron amber (see electric )
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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e·lec·tron   (ĭ-lěk'trŏn')   
n.   Abbr. e
A stable subatomic particle in the lepton family having a rest mass of 9.1066 × 10-28 grams and a unit negative electric charge of approximately 1.602 × 10-19 coulombs. See Table at subatomic particle.

[electr(ic) + -on1.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: elec·tron
Pronunciation: i-'lek-"trän
Function: noun
: an elementary particle consisting of a charge of negative electricity equal toabout 1.602 × 10−19coulomb and having a mass when at rest of about 9.109534 × 10−28gram or about 1/1836 that ofa proton
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

electron e·lec·tron (ĭ-lěk'trŏn')
n.
Abbr. e
A stable subatomic particle in the lepton family having a rest mass of 9.1066 × 10-28 gram and a unit negative electric charge of approximately 1.602 × 10-19 coulomb. Also called negatron.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
electron   (ĭ-lěk'trŏn')  Pronunciation Key 

  1. A stable elementary particle in the lepton family having a mass at rest of 9.107 × 10-28 grams and an electric charge of approximately -1.602 × 10-19 coulombs. Electrons orbit about the positively charged nuclei of atoms in distinct orbitals of different energy levels, called shells. Electrons are the primary charge carriers in electric current. Compare positron. See also electromagnetism, elementary particle, ion. See Table at subatomic particle.

  2. A positron or a negatron. See more at negatron.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

electron electronics
A sub-atomic particle with a negative quantised charge. A flow of electrical current consists of the unidirectional (on average) movement of many electrons. The more mobile electrons are in a given material, the greater it electrical conductance (or equivalently, the lower its resistance).
(1995-10-06)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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