/ Dictionary / Index G greenhouse: Meaning and Definition of Find definitions for: green•house Pronunciation: (grēn'hous"), [key] — pl. -hous•es a building, room, or area, usually chiefly of glass, in which the temperature is maintained within a desired range, used for cultivating tender plants or growing plants out of season. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: greenhouse (Thesaurus) greenhorn greenhouse effect Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language