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
Nancy Lane, Boston Herald, 26 Mar. 2026
Those projects took place within the existing footprint of the south campus, replacing the 1890s-era Cretin Hall dormitory, the 1960s-era McCarthy Gym and an 1890s-era service center, as well as a greenhouse.
—Frederick Melo, Twin Cities, 22 Mar. 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
Uncategorized An annual tradition started by Gardner herself with the 20ft vines grown through the winter at the museum’s greenhouse.
—Nancy Lane, Boston Herald, 26 Mar. 2026
Those projects took place within the existing footprint of the south campus, replacing the 1890s-era Cretin Hall dormitory, the 1960s-era McCarthy Gym and an 1890s-era service center, as well as a greenhouse.
—Frederick Melo, Twin Cities, 22 Mar. 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 3 Apr. 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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