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
greenhouse
adjectiveDefinition of greenhouse (Entry 2 of 2)
: of, relating to, contributing to, or caused by the greenhouse effect
greenhouse warming greenhouse gases
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Time Traveler for greenhouse
The first known use of greenhouse was in 1664
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