/ Dictionary / Index H holo-: Meaning and Definition of Find definitions for: holo- Pronunciation: [key] a combining form meaning “whole,” “entire,” used in the formation of compound words: holomorphic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. holm oak holoblastic Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language