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greenhouse

[green-hous]
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noun, plural green·hous·es [green-hou-ziz] /ˈgrinˌhaʊ zɪz/.
  1. 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.

Origin of greenhouse

First recorded in 1655–65; green + house
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for greenhouse

greenhouse

noun
  1. a building with transparent walls and roof, usually of glass, for the cultivation and exhibition of plants under controlled conditions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for greenhouse

n.

1660s, from green + house (n.). Greenhouse effect attested from 1937.

Online Etymology Dictionary, © 2010 Douglas Harper