[i-lek-tron] 
| 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 )
| 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.] |
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.
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.
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)
