SUBCONTRARY


Meaning of SUBCONTRARY in English

adj. & n. Logic

--adj. (of a proposition) incapable of being false at the same time as another.

--n. (pl. -ies) such a proposition.

Etymology: LL subcontrarius (as SUB-, CONTRARY), transl. Gk hupenantios

Oxford English vocab.      Оксфордский английский словарь.