Category definition, any general or comprehensive division; a class. See more. Dictionary.com; Word of the Day; Translate; Games; Blog; Thesaurus.com; Apps Favorites Full Definition of CATEGORY 1 : any of several fundamental and distinct classes to which entities or concepts belong 2 : a division within a system of classification In the second category Pierre reckoned himself and others like him, seeking and vacillating, who had not yet found in Freemasonry a straight and comprehensible path Synonyms for category at Thesaurus.com with free online thesaurus, antonyms, and definitions. Dictionary and Word of the Day.This disambiguation page lists articles associated with the title Category. If an internal link led you here, you may wish to change the link to point The definition of a category is any sort of division or class. An example of category is food that is made from grains. category. pl.-·ries.This page contains guidance on the proper use of the categorization function in Wikipedia. For information on the mechanics of the function, category syntax, etc Categories definition, any general or comprehensive division; a class. See more. category should be used by no-one who is not prepared to state (1) Category. A category consists of three things: a collection of objects, for each pair of objects a collection of morphisms (sometimes call “arrows”) from one to The traditional way of describing the similarities and differences between constituents is to say that they belong to categories of various types.