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prejacent

adjective
pre·​ja·​cent | \prēˈjāsᵊnt\

Definition of prejacent 

(Entry 1 of 2)

1 obsolete : preexisting

2 : being an antecedent proposition in logic from which another is developed

prejacent

noun
\"\
plural -s

Definition of prejacent (Entry 2 of 2)

: a prejacent proposition in logic

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History and Etymology for prejacent

Adjective

Middle French, from Latin praejacent-, praejacens, present participle of praejacēre to lie before, from prae- pre- + jacēre to lie

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