/ Dictionary / Index T terrestrial: Meaning and Definition of Find definitions for: ter•res•tri•al Pronunciation: (tu-res'trē-ul), [key] — adj. pertaining to, consisting of, or representing the earth as distinct from other planets. of or pertaining to land as distinct from water. growing on land; not aquatic. growing in the ground; not epiphytic or aerial. living on or in the ground; not aquatic, arboreal, or aerial. of or pertaining to the earth or this world; worldly; mundane. —n. an inhabitant of the earth, esp. a human being. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: terrestrial (Thesaurus) terreplein terrestrial globe Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language