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  1. Oxford American Dictionary

    greenhouse effect

    • IPA[ˈɡrēnˌ(h)ous əˌfek(t)]

    美式

    • n.
      the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.

    • noun: greenhouse effect, plural noun: greenhouse effects