/ Dictionary / Index H HeLa cell: Meaning and Definition of Find definitions for: He'La cell" Pronunciation: (hel'u), [key] — Biol. Biol. a vigorous strain of laboratory-cultured cells descended from a human cervical cancer, used widely in research. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hel hélas* Related Content Daily Word Quiz: voracious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language