definition of
classification

[1] #1 classification n. [categorization, categorisation, compartmentalization, compartmentalisation, assortment] the act of distributing things into classes or categories of the same type. wn

[2] #2 classification n. [categorization, categorisation] a group of people or things arranged by class or category. wn

[3] #3 classification n. [categorization, categorisation, sorting] the basic cognitive process of arranging into classes or categories. wn

[4] #4 classification n. restriction imposed by the government on documents or weapons that are available only to certain authorized people. wn