classification

Universal Words noun 1 [U] the act or process of putting people or things into a group or class (= of CLASSIFYING them): a style of music that defies classification (= is like no other) 2 [C] a group, class, division, etc. into which sb or sth is put 3 [U] (biology) the act of putting animals, plants, etc. into groups, classes or divisions according to their characteristics: The classification of bony fish is extremely complicated. 4 [C] (technical) a system of arranging books, tapes, magazines, etc. in a library into groups according to their subject