World English Dictionary
terrestrial (təˈrɛstrɪəl)
1.  of or relating to the earth
2.  of or belonging to the land as opposed to the sea or air
3.  (of animals and plants) living or growing on the land
4.  earthly, worldly, or mundane
5.  (of television signals) sent over the earth's surface from a transmitter on land, rather than by satellite
6.  an inhabitant of the earth
[C15: from Latin terrestris, from terra earth]

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