/ Dictionary / Index H histoid: Meaning and Definition of Find definitions for: his•toid Pronunciation: (his'toid), [key] — adj. resembling normal tissue in structure. similar to or derived from one kind of tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. histography histologist 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