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English definition of “terrestrial”

terrestrial

adjective uk   /təˈres.tri.əl/ us  

terrestrial adjective (EARTH)

formal relating to the planet Earth

terrestrial adjective (ANIMALS)

specialized biology (of animals) living on the land rather than in the sea or air

terrestrial adjective (TELEVISION)

formal describes television channels that are broadcast from stations on the ground and do not use satellites
(Definition of terrestrial from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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