/ Dictionary / Index H haustorium: Meaning and Definition of Find definitions for: haus•to•ri•um Pronunciation: (hô-stôr'ē-um, -stōr'-), [key] — pl. haus•to•ri•a a projection from the hypha of a fungus into the organic matter from which it absorbs nutrients. the penetrating feeding organ of certain parasites. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: haustorium (Thesaurus) haustellum hautbois Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language