green·​house | \ ˈgrēn-ˌhau̇s How to pronounce greenhouse (audio) \

Definition of greenhouse

 (Entry 1 of 2)

1 : a structure enclosed (as by glass) and used for the cultivation or protection of tender plants
2 : a clear plastic shell (such as a canopy) covering a section of an airplane also : a compartment (as for a bombardier) enclosed by such a shell



Definition of greenhouse (Entry 2 of 2)

: of, relating to, contributing to, or caused by the greenhouse effect greenhouse warming greenhouse gases

Synonyms for greenhouse

Synonyms: Noun

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Examples of greenhouse in a Sentence

Noun needed to move the plants into the greenhouse before the first frost killed them
Recent Examples on the Web: Noun So how can the SEC have (greenhouse gas emissions risk) in its rulemaking? Kenneth Rapoza, Forbes, 1 Aug. 2022 Lighter products mean fewer greenhouse gas emissions during transport — a good thing, since CO2 emissions from global freight transport are expected to quadruple by 2050, per an environmental report from the International Transport Forum. Jennifer G. Sullivan, Allure, 31 July 2022 Methane traps far more heat in the atmosphere than carbon dioxide, the most abundant greenhouse gas. Jeff Stein, Maxine Joselow And Rachel Roubein, Anchorage Daily News, 29 July 2022 The Dems say these provisions will slash US greenhouse gas emissions 40 percent by 2030. Teresa M. Hanafin,, 28 July 2022 Those two sectors are responsible for 52 percent of total U.S. greenhouse gas emissions. Wes Siler, Outside Online, 28 July 2022 The tentative deal between the two lawmakers would see $369 billion invested in energy security and climate change programs over the next two years, with the aim of reducing greenhouse gas emissions to 40% below 2005 levels by 2030. Liam Hess, Vogue, 28 July 2022 The bill would also crack down on leaks of methane, a powerful greenhouse gas, from oil and gas wells, pipelines and other infrastructure. New York Times, 28 July 2022 Some environmental advocates point to evidence that suggests both approaches may be ineffective at preventing greenhouse-gas emissions. Timothy Puko, WSJ, 28 July 2022 Recent Examples on the Web: Adjective Millstone accounts for 40% of Connecticut’s electricity and 90% of non-greenhouse gas emissions. Stephen Singer, Hartford Courant, 31 May 2022 And there are other ways for the president to crack down on emissions, including tightening regulations on non-greenhouse coal-plant pollutants and vehicle fuel economy standards, and boosting support for renewables. Tim Mcdonnell, Quartz, 22 Sep. 2020 The emissions impact of millions of people not commuting by car every day are enormous No single activity contributes more greenhouse gas emissions than driving to and from work. Matt Butner, Quartz at Work, 5 May 2020 Ideally, the new project would generate less greenhouse gas emissions than are being created at the Coliseum. Phil Matier,, 25 Mar. 2020 The change is also expected to result in significantly more greenhouse gas emissions, which trap the sun’s heat, worsening the effects of climate change. Los Angeles Times, 31 Mar. 2020 Of the 90 countries whose oil extraction was studied, few generated more greenhouse gas per barrel. Christopher Flavelle, New York Times, 12 Feb. 2020 The thawing of permafrost represents a positive feedback that amplifies warming by releasing more greenhouse gas into the atmosphere. Scott K. Johnson, Ars Technica, 6 Feb. 2020 Increasing fuel efficiency means vehicles burn less gas and subsequently emit less greenhouse gas pollution into the atmosphere. New York Times, 25 July 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'greenhouse.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of greenhouse


1664, in the meaning defined at sense 1


1974, in the meaning defined above

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Time Traveler for greenhouse

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The first known use of greenhouse was in 1664

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Dictionary Entries Near greenhouse



greenhouse effect

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Statistics for greenhouse

Last Updated

4 Aug 2022

Cite this Entry

“Greenhouse.” Dictionary, Merriam-Webster, Accessed 9 Aug. 2022.

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More Definitions for greenhouse


green·​house | \ ˈgrēn-ˌhau̇s How to pronounce greenhouse (audio) \

Kids Definition of greenhouse

: a building with clear walls and roof (as of glass) for growing plants

More from Merriam-Webster on greenhouse

Nglish: Translation of greenhouse for Spanish Speakers

Britannica English: Translation of greenhouse for Arabic Speakers Encyclopedia article about greenhouse


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