NEOLOGISM Meaning of NEOLOGISM in English n.1 a new word or expression. 2 the coining or use of new words. Derivatives: neologist n. neologize v.intr. (also -ise). Etymology: F n{eacute}ologisme (as NEO-, -LOGY, -ISM) Oxford English vocab. Оксфордский английский словарь. 2012