clas·si·fi·ca·tion (klās'ə-fĭ-kā'shən) n. The act, process, or result of classifying. A category or class. Biology The systematic grouping of organisms into categories on the basis of evolutionary or structural relationships between them; taxonomy. clas'si·fi·ca·to'ri·ly (klās'ə-fĭ-kə-tôr'ə-lē, -tōr'-, klə-sĭf'ĭ-) adv., clas'si·fi·ca·to'ry (klās'ə-fĭ-kə-tôr'ē, -tōr'ē, klə-sĭf'ĭ-, klās'ə-fĭ-kā'tə-rē) adj. |