neologism Syllabification: (ne·ol·o·gism)Pronunciation: /nēˈäləˌjizəm/Translate neologism | into Italian Definition of neologism noun a newly coined word or expression. the coining or use of new words. Derivatives neologistPronunciation: /-jist/ noun neologizePronunciation: /-ˌjīz/ verb Origin: early 19th century: from French néologismeneologism in other Oxford dictionaries Definition of neologism in the British & World English dictionary