Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of or relating to the earth or its inhabitants.
  • adj. Having a worldly, mundane character or quality.
  • adj. Of, relating to, or composed of land.
  • adj. Biology Living or growing on land; not aquatic: a terrestrial plant or animal.
  • n. An inhabitant of the earth.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An inhabitant of the planet Earth.
  • n. A ground-dwelling plant.
  • adj. Of, relating to, or inhabiting the land of the Earth or its inhabitants.
  • adj. Of, relating to, or composed of land.
  • adj. Living or growing in or on land (as opposed to other habitat); not aquatic, etc.
  • adj. Of a planet, being composed primarily of silicate rocks or metals; see also terrestrial planet.
  • adj. Concerned with the world or worldly matters.
  • adj. Of or pertaining to the second highest degree of glory.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of or pertaining to the earth; existing on the earth; earthly.
  • adj. Representing, or consisting of, the earth.
  • adj. Of or pertaining to the world, or to the present state; sublunary; mundane.
  • adj. Consisting of land, in distinction from water; belonging to, or inhabiting, the land or ground, in distinction from trees, water, or the like.
  • adj. Adapted for the observation of objects on land and on the earth.
  • n. an eyepiece used in telescopes for viewing terrestrial objects, consisting of three, or usually four, lenses, so arranged as to present the image of the object viewed in an erect position.
  • n. An inhabitant of the earth.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to the earth; existing on the earth; earthly: opposed to celestial: as, terrestrial bodies; terrestrial magnetism.
  • Representing or consisting of the earth: as, a or the terrestrial globe. See globe, 4.
  • Pertaining to the world or to the present state; sublunary; worldly; mundane.
  • Pertaining to or consisting of land, as opposed to water, or of earth.
  • In zoology, living on the ground; confined to the ground; not aquatic, arboreal, or aërial; terricolous.
  • In botany, growing on land, not aquatic; growing in the ground, not on trees.
  • n. An inhabitant of the earth.
  • n. plural In zoology: A section of the class Aves, the Terrestres.
  • n. The pulmonate gastropods.
  • n. A division of isopods.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. operating or living or growing on land
  • adj. of this earth
  • adj. concerned with the world or worldly matters
  • adj. of or relating to or characteristic of the planet Earth or its inhabitants
  • adj. of or relating to or inhabiting the land as opposed to the sea or air

Etymologies

Middle English, from Latin terrestris, from terra, earth.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin terrestris, from terra ("land, earth, ground"). (Wiktionary)

Examples

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