a new word, meaning, usage, or phrase.

the introduction or use of new words or new senses of existing words.

a new doctrine, esp. a new interpretation of sacred writings.

Psychiatry . a new word, often consisting of a combination of other words, that is understood only by the speaker

occurring most often in the speech of schizophrenics.

noun

time-worn

noun

buzz word , coinage , neology , new phrase , slang , synthetic word , vogue wordnotes:a nonce word is one that has been coined or borrowed for a particular occasion and is unlikely to become standard in the language; a neologism is a \'new word\' in the language