<p><strong>Noun</strong></p><ul><li>The present, or immediate, occasion or purpose (usually used in the phrase "for the nonce").</li><li>A randomly or automatically generated and often timestamped number intended for a single use in a communication: used especially in authentication and security protocols.</li></ul><p><strong>Adjective</strong></p><ul><li>(Of a word or phrase) coined and used only for a particular occasion: nonce forms such as “paintrix,” meaning “a female painter.”</li></ul>