/ Dictionary / Index D diachronic: Meaning and Definition of Find definitions for: di•a•chron•ic Pronunciation: (dī"u-kron'ik), [key] — adj. Ling. of or pertaining to the changes in a linguistic system between successive points in time; historical:Cf. synchronic. diachronic analysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diachronic (Thesaurus) diacetylmorphine diachronic linguistics Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language