Dewey decimal classification
noun
Dew·ey decimal classification
| \ ˈdü-ē-
also ˈdyü-\
also ˈdyü-\
Definition of Dewey decimal classification
: a system of classifying books and other publications whereby main classes are designated by a 3-digit number and subdivisions are shown by numbers after a decimal point
— called also Dewey decimal system
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