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Audio Help [i-lek-tron] Pronunciation Key | 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. |
lektron amber (see electric)
] | Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
electron
To learn more about electron visit Britannica.com
| © 2008 Encyclopædia Britannica, Inc. |
| e·lec·tron
Audio Help (ĭ-lěk'trŏn') Pronunciation Key
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 © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
electron
| Online Etymology Dictionary, © 2001 Douglas Harper |
| electron | |
noun | |
| an elementary particle with negative charge |
| WordNet® 3.0, © 2006 by Princeton University. |
electron [iˈlektron] noun
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| Kernerman English Multilingual Dictionary (Beta Version), © 2000-2006 K Dictionaries Ltd. |
electron
Audio Help (ĭ-lěk'trŏn') Pronunciation Key
|
| The American Heritage® Science Dictionary Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
electron [(i-lek-tron)]
An elementary particle with a negative charge and a very small mass. Electrons are normally found in orbits around the nucleus of an atom. The chemical reactions that an atom undergoes depend primarily on the electrons in the outermost orbits (the valence electrons).
Note: The movement of large numbers of electrons through conductors constitutes an electric current.
[Chapter:] Physical Sciences and Mathematics
| The American Heritage® New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
e·lec·tron (
-l
k
tr
n
)
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. |
Main Entry: elec·tron
Pronunciation: i-'lek-"trän
Function: noun
: an elementary particle consisting of a charge of negative electricity equal to
about 1.602 × 10−19coulomb and having a mass when at rest of about 9.109534 × 10−28gram or about 1/1836 that of
a proton
| Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc. |
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 |
Electron
E*lec"tron\, n. [NL., fr. Gr. 'h`lektron. See Electric.] Amber; also, the alloy of gold and silver, called electrum.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
Electron
E*lec"trum\, n. [L., fr. Gr. ?. See Electric, and cf. Electre, Electron.]1. Amber. 2. An alloy of gold and silver, of an amber color, used by the ancients. 3. German-silver plate. See German silver, under German.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
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