/ Dictionary / Index S subjacent: Meaning and Definition of Find definitions for: sub•ja•cent Pronunciation: (sub-jā'sunt), [key] — adj. situated or occurring underneath or below; underlying. forming a basis. lower than but not directly under something. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subjacent (Thesaurus) subj. subject 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