American English

Definition of terrestrial adjective from the Oxford Advanced American Dictionary



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  1. 1(technology) (of animals and plants) living on the land or on the ground, rather than in water, in trees, or in the air a terrestrial habitat
  2. 2connected with the planet Earth terrestrial life compare celestial, extraterrestrial
  3. 3(of television and broadcasting systems) operating on Earth rather than from a satellite
See the Oxford Advanced Learner's Dictionary entry: terrestrial