Neologism
Origin
From French néologisme, from Ancient Greek νÎος ("new") + λόγος (logos, "word").
Full definition of neologism
Noun
neologism
(countable and uncountable; plural neologisms)- (linguistics) A word or phrase which has recently been coined; a new word or phrase.
- (linguistics, uncountable) The act or instance of coining, or uttering a new word.
- (psychiatry) The newly coined, meaningless words or phrases of someone with a psychosis, usually schizophrenia.
Usage notes
For a word to be no longer considered new, it needs to be understood by a significant portion of the population as having always been a valid word. For that to occur the word must have been in common use for approximately one generation — fifteen to twenty years — but there is no universally accepted measure.