/ Dictionary / Index S subterranean: Meaning and Definition of Find definitions for: sub•ter•ra•ne•an Pronunciation: (sub"tu-rā'nē-un), [key] — adj. existing, situated, or operating below the surface of the earth; underground. existing or operating out of sight or secretly; hidden or secret. —n. a person or thing that is subterranean. a subterrane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subterranean (Thesaurus) subterrane subterrestrial Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language