A nonce word is a lexeme created for a single occasion to solve an immediate problem of communication. The term is used because such a word is created "for the nonce" and is thus "an invented or accidental linguistic form, used only once". All nonce words are also neologisms (newly created words that have not entered the lexicon of a language). Some nonce words have a meaning and may (or may not) become an established part of the language, while others are essentially meaningless and disposable and are useful for exactly that reason, for instance in child language testing.[citation needed] The term nonce word was apparently the creation of James Murray, the influential editor of the Oxford English Dictionary.[citation needed]