proton

pro·ton   (prō'tŏn')    n.   Abbr. p A stable, positively charged subatomic particle in the baryon family having a mass 1,836 times that of the electron. See Table at subatomic particle. [From Greek prōton, neuter of prōtos, first; see per1 in Indo-European roots.] pro·ton'ic adj.

Main Entry: pro·ton
Pronunciation: 'prO-"tän
Function: noun
: an elementary particle that is identical with the nucleus of the hydrogen atom,that along with neutrons is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron, and that has a mass of1.673×10⁻²⁴ gram —pro·ton·ic /prO-'tän-ik/ adjective

proton pro·ton (prō'tŏn')
n.
A stable, positively charged subatomic particle in the baryon family having a mass 1,836 times that of the electron.

proton   (prō'tŏn')  Pronunciation Key  A stable subatomic particle in the baryon family having a mass of 1.672 × 10-24 grams (1,836 times that of the electron) and a positive electric charge of approximately 1.602 × 10-19 coulombs. Protons make up part of the nucleus of all atoms except hydrogen, whose nucleus consists of a single proton. In neutral atoms, the number of protons is the same as the number of electrons. In positively charged atoms, the number of protons is greater than the number of electrons, and in negatively charged atoms electrons outnumber protons. Protons are believed to be composed of two up quarks and one down quark. See Table at subatomic particle.

PROTON
1. A home computer made by Acorn Computers under a contract won from the BBC in April 1981.
[Details?]
2. Something to do with Microsoft SoftLib?
(1994-11-28)