noun
greenhouse
GREEN-hows
noun
1
A glass or plastic-covered building used to grow plants by trapping heat and sunlight.
"She grows tomatoes in the greenhouse all year round."
2
Used in "greenhouse effect" or "greenhouse gas" to describe the trapping of heat in Earth's atmosphere.
"Carbon dioxide is one of the main greenhouse gases driving climate change."
verb
1
To grow or nurture something, especially plants, in protected conditions.
"The nursery greenhouses young seedlings before planting them outdoors."
How to Use Greenhouse
Learner’s notesIn plain EnglishA glass building for growing plants, or (in climate contexts) the effect of gases trapping heat in the atmosphere.
Common pairings
greenhouse effect
greenhouse gas
grow in a greenhouse
Word Forms
greenhoused past tense, greenhouses plural, Greenhouses plural, greenhouses singular
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She grows tomatoes in the _____ all year round.
Etymology
From green plus house — literally, a house for growing green produce.