green·house
ˈgrēn-ˌhau̇s 
plural greenhouses
1
: a usually permanent climate-controlled structure enclosed (as by glass or multiple layers of plastic) and used usually year-round 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
: of, relating to, contributing to, or caused by the greenhouse effect
greenhouse warming
greenhouse gases
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
Condé Nast, Condé Nast Traveler, 16 May 2026
Longtime residents might remember the hot dogs and burgers making their way past eager students on field trips at the National Museum of American History’s revolving Carousel Cafeteria, or the large, greenhouse-like McDonald’s inside the Air and Space Museum.
—Fritz Hahn, Washington Post, 15 May 2026
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
See All Example Sentences for greenhouse
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Noun
The farm is instant fun for kids, and my kids couldn’t get enough of exploring the greenhouse, fields of corn, and feeding the chickens and sheep.
—Condé Nast, Condé Nast Traveler, 16 May 2026
Longtime residents might remember the hot dogs and burgers making their way past eager students on field trips at the National Museum of American History’s revolving Carousel Cafeteria, or the large, greenhouse-like McDonald’s inside the Air and Space Museum.
—Fritz Hahn, Washington Post, 15 May 2026
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
See All Example Sentences for greenhouse
Cite this Entry
“Greenhouse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/greenhouse. Accessed 20 May. 2026.
Copy CitationKids Definition
greenhouse
1 of 2 noun
green·house
-ˌhau̇s
: a glassed enclosure for cultivation of plants
greenhouse
2 of 2 adjective
: relating to, causing, or caused by the greenhouse effect
greenhouse warming
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