of or pertaining to the earth; existing on the earth; earthly; as, terrestrial animals.-representing, or consisting of, the earth; as, a terrestrial globe.-of or pertaining to the world, or to the present state; sublunary; mundane.-consisting of land, in distinction from water; belonging to, or inhabiting, the land or ground, in distinction from trees, water, or the like; as, terrestrial serpents.-adapted for the observation of objects on land and on the earth; as, a terrestrial telescope, in distinction from an astronomical telescope.-an inhabitant of the earth.