/ Dictionary / Index T Tertullian: Meaning and Definition of Find definitions for: Ter•tul•li•an Pronunciation: (tur-tul'ē-un, -tul'yun), [key] — n. a.d.c160–c230, Carthaginian theologian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tertullian (Thesaurus) tertium quid tervalent Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language