clas·si·fi·ca·tion 
(klăs′ə-fĭ-kāshən)
(klăs′ə-fĭ-kāshən)n.
1. The act, process, or result of classifying.
2. A category or class.
3. Biology The systematic grouping of organisms into categories on the basis of evolutionary or structural relationships between them; taxonomy.
clas′si·fi·ca·tori·ly (klăs′ə-fĭ-kə-tôrə-lē, klə-sĭf′ĭ-) adv.
classi·fi·ca·to′ry (klăsə-fĭ-kə-tôr′ē, klə-sĭfĭ-, klăs′ə-fĭ-kātə-rē) adj.