greenhouse effect noun
Learner's definition of GREENHOUSE EFFECT
the greenhouse effect
: the warming of the Earth's atmosphere that is caused by air pollution温室效应 ◊ The greenhouse effect occurs when warmth from the sun is trapped in the Earth's atmosphere by a layer of gases (such as carbon dioxide) and water vapor.地球大气中的气体(如二氧化碳)和水蒸气吸收太阳中的热量形成温室效应。