Protologism

In linguistics, a protologism is a newly coined word, a nonce word, that has been repeated but has not gained acceptance beyond its original users or been published independently of the coiners. The word may be proposed, may be extremely new, or may be established only within a very limited group of people. A protologism becomes a neologism as soon as it appears in published press, on a website, or in a book, independently of the coiner—though, most definitively, in a dictionary.