Greenhouse meaning

grēn'hous'
Of or contributing to the greenhouse effect.

Greenhouse gases.

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A building traditionally made of glass, but now also made from plastics such as polyethylene, in which plants are grown more rapidly than outside such a building by the action of heat from the sun, this heat being trapped inside by the glass or plastic.
noun
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A clear plastic bubble or shell covering part of an aircraft.
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A structure, primarily of glass, in which temperature and humidity can be controlled for the cultivation or protection of plants.
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The definition of a greenhouse is a building made of glass panes in which heat and humidity can be regulated in order to grow plants.

An example of a greenhouse is where vegetables can be grown when the outside weather is below freezing.

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A building made mainly of glass, in which the temperature and humidity can be regulated for the cultivation of delicate or out-of-season plants.
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Origin of greenhouse