Definition of terrestrial

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< terreplein

terrestrial planet >

ter·res·tri·al    (t-rstr-l) KEY  

ADJECTIVE:

1. Of or relating to the earth or its inhabitants.
2. Having a worldly, mundane character or quality.
3. Of, relating to, or composed of land.
4. Biology Living or growing on land; not aquatic: a terrestrial plant or animal.

NOUN:

An inhabitant of the earth.

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ETYMOLOGY:
Middle English, from Latin terrestris, from terra, earth; see ters- in Indo-European roots

OTHER FORMS:
ter·restri·al·ly (Adverb), ter·restri·al·ness (Noun)

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