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Definitions from the Web

Terrestrial

Part of Speech: Adjective

Sense 1:

Related to or existing on land.

Sample Sentence: The terrestrial habitat includes forests, deserts, and grasslands.

Related Products: Terrestrial Ecology, Terrestrial Plants

Part of Speech: Noun

Sense 1:

An inhabitant of the Earth or a planet.

Sample Sentence: The discovery of water on Mars has been of great interest to researchers in the search for potential terrestrials.

Related Products: Books about Extraterrestrial Life, Alien Figurines

Part of Speech: Noun

Sense 2:

A broadcasting or telecommunication system that transmits signals through Earth's atmosphere rather than through space.

Sample Sentence: The new terrestrials have improved signal reception in remote areas.

Related Products: TV Antenna, WiFi Booster