/ Dictionary / Index C circumterrestrial: Meaning and Definition of Find definitions for: cir•cum•ter•res•tri•al Pronunciation: (sûr"kum-tu-res'trē-ul), [key] — adj. surrounding or revolving about the earth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. circumstellar circumvallate Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language