/ Dictionary / Index D deuteron: Meaning and Definition of Find definitions for: deu•ter•on Pronunciation: (d'tu-ron", dy'-), [key] — n. Physics. a positively charged particle consisting of a proton and a neutron, equivalent to the nucleus of an atom of deuterium. Cf. triton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deuteron (Thesaurus) deuteromycete Deuteronomic Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language