SYLLOGIZE Meaning of SYLLOGIZE in English v. (also -ise) 1. intr. use syllogisms. 2 tr. put (facts or an argument) in the form of syllogism. Etymology: ME f. OF sillogiser or LL syllogizare f. Gk sullogizomai (as SYLLOGISM) Oxford English vocab. Оксфордский английский словарь. 2012