Meaning of “terrestrial” in the English Dictionary

(Definition of “terrestrial” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"terrestrial" in American English

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terrestrialadjective [ not gradable ]

us /təˈres·tri·əl/

earth science relating to the planet earth, or living or existing on the land rather than in the sea or air:

Newton investigated terrestrial and celestial motion.
marine and terrestrial environments

(Definition of “terrestrial” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"terrestrial" in Business English

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uk /təˈrestriəl/ us

COMMUNICATIONS relating to television programmes that are not broadcast by cable or satellite:

terrestrial TV

(Definition of “terrestrial” from the Cambridge Business English Dictionary © Cambridge University Press)