Neologism

noun/niˈɑləˌd͡ʒɪzəm/rhetoric

Definition

A newly coined word or expression.

Etymology

From French néologisme, from Ancient Greek νέος (néos, “new”) + λόγος (lógos, “word”) +‎ -ism.

Synonyms

coinage, neoterism

In a sentence

Every product launch spawns a neologism that nobody outside marketing understands.