I. prēˈjās ə nt adjective
Etymology: Middle French, from Latin praejacent-, praejacens, present participle of praejacēre to lie before, from prae- pre- + jacēre to lie — more at adjacent
1. obsolete : preexisting
2. : being an antecedent proposition in logic from which another is developed
II. noun
( -s )
: a prejacent proposition in logic