Warming that results when solar radiation is trapped by the atmosphere; caused by atmospheric gases that allow sunshine to pass through but absorb heat that is radiated back from the warmed surface of the earth WordNet 3.0 & Open English WordNet

The greenhouse effect occurs when greenhouse gases in a planet's atmosphere cause some of the heat radiated from the planet's surface to build up at the planet's surface. Wikipedia

The effects on a planet when 'greenhouse gases' cloud the atmosphere Wikipedia Disambiguation

Atmospheric phenomenon Wikidata

The warming of the Earth's atmosphere caused by the increasing concentration of atmospheric gases, such as water vapour and carbon dioxide. These gases absorb radiation emitted by the Earth, thus slowing down the loss of radiant energy from the Earth back to space. OmegaWiki

The process by which a planet is warmed by its atmosphere. Wiktionary

Process by which a planet is warmed by its atmosphere. Wiktionary (translation)

Warming caused by the greenhouse effect. Wiktionary