<p><strong>Adjective</strong></p><ul><li>So related that each implies or complements the other.</li><li>Being in correlation; mutually related.</li><li>Grammar: Answering to or complementing one another and regularly used in association, as either and or, not only and but.</li><li>Biology: (Of a typical structure of an organism) found in correlation with another.</li></ul><p><strong>Noun</strong></p><ul><li>Either of two things, as two terms, that are correlative.</li><li>Grammar: A correlative expression.</li></ul>