Dewey decimal system

Từ điển WordNet v3.1 - WordNet Dictionary

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
• Syn:
Dewey decimal classification, decimal system of classification
• Hypernyms:
classification system