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Vocabulary, Controlled

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Definition: A specified list of terms with a fixed and unalterable meaning, and from which a selection is made when CATALOGING; ABSTRACTING AND INDEXING; or searching BOOKS; JOURNALS AS TOPIC; and other documents. The control is intended to avoid the scattering of related subjects under different headings (SUBJECT HEADINGS). The list may be altered or extended only by the publisher or issuing agency. (From Harrod's Librarians' Glossary, 7th ed, p163)     
Examples Current Procedural Terminology; Diagnostic and Statistical Manual of Mental Disorders; Healthcare Common Procedure Coding System; International Classification of Diseases; Logical Observation Identifiers Names and Codes; Subject Headings; Systematized Nomenclature of Medicine; Unified Medical Language System 		Other names Vocabularies, Controlled; Thesaurus, Controlled; Thesauri, Controlled; Controlled Vocabularies; Controlled Thesaurus; Controlled Thesauri; Thesauri; Controlled Vocabulary; Thesaurus

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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