<p><strong>Noun</strong></p><ul><li>the act of classifying.</li><li>the result of classifying or being classified.</li><li>one of the groups or classes into which things may be or have been classified.</li><li>Biology: the assignment of organisms to groups within a system of categories distinguished by structure, origin, etc.</li><li>the category to which information, a document, etc., is assigned, based on the degree of protection considered necessary to safeguard it from unauthorized use.</li><li>Library Science: any of various systems for arranging books and other materials, especially according to subject or format.</li></ul><p><strong>End of Response</strong></p>