Terrestrial means relating to the earth or those who live there.(adjective)
An example of a terrestrial being is an animal.
The definition of a terrestrial is someone who lives on Earth.(noun)
An example of a terrestrial is a person who lives on the planet.
See terrestrial in Webster's New World College Dictionary
Origin: ME terrestrialle < L terrestris < terra, terra
See terrestrial in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Latin terrestris
Origin: , from terra, earth; see ters- in Indo-European roots.
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