Dewey decimal system

Definitions of Dewey decimal system
  1. noun
    a system used by libraries to classify nonfictional publications into subject categories; the subject is indicated by a three-digit numeral and further specification is given by numerals following a decimal point; publications are shelved by number
    synonyms: Dewey decimal classification, decimal system of classification
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    type of:
    classification system
    a system for classifying things
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