/ Dictionary / Index H helices: Meaning and Definition of Find definitions for: hel•i•ces Pronunciation: (hel'u-sēz"), [key] — n. a pl. of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: helices (Thesaurus) heliced helichrysum Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language