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terra cotta
terra firma
terra incognita
Terra Nova National Park
terra nullius
terrace
terraced house
terracing
terradactyl
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terrain
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terrestrial radiation

ter·res·tri·al ra·di·a·tion


noun 
Definition:
 
radiation originating from Earth at night: electromagnetic radiation in the form of heat emitted by the Earth as it cools down at night, especially when the air is dry and there are no clouds

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