/ Dictionary / Index G Gaius: Meaning and Definition of Find definitions for: Ga•ius Pronunciation: (gā'us), [key] — n. a.d. c110–c180, Roman jurist and writer, esp. on civil law. Caius. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gaius (Thesaurus) Gaitskell Gajdusek Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language