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Dewey decimal system

noun [U]
 
 
/ˌdjuː.iˈdes.ɪ.məlˌsɪs.təm/ US  /ˌduː.i-/

Definition

a system of organizing books and magazines, etc. in libraries, by which a book is given three numbers for each main subject and another number or numbers, after a decimal point (= a small solid circle) for its place within that subjectLists and cataloguesSchedules and agendas
(Definition of Dewey decimal system noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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