/ Dictionary / Index H Helvetii: Meaning and Definition of Find definitions for: Hel•ve•ti•i Pronunciation: (hel-vē'shē-ī"), [key] — n.pl. the ancient Celtic inhabitants of Helvetia in the time of Julius Caesar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Helvetic Helvétius Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language