Information Science

Classification

The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.

MeSH Record

Classification

Narrower headings

MeSH Qualifier

Used as a Subheading

Classification is also a MeSH subheading (qualifier Q000145), attached to other headings to focus them on this aspect:

Used for taxonomic or other systematic or hierarchical classification systems.

Qualifier ID
Q000145
Qualifier Tree
Y19

Indexing annotation

subhead only; includes "taxonomy", "systematics", "hierarchies"; indexing policy: Manual 19.8.16; DF: /class or /CL

Subheading synonyms

  • taxonomy
  • hierarchies
  • hierarchy
  • systematics

Related Concepts

Knowledge Graph

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MeSH Record

See Also

MeSH Record

Synonyms

4 entry terms
  • Systematics
  • Classifications
  • Taxonomy
  • Taxonomies

MeSH Record

Aspects Covered

1 allowable subheadings

Indexed with the subheadings methods.

MeSH Record

Indexing Annotation

general only; prefer /class

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Classification. Medical Subject Headings (MeSH). 2026. Unique ID D002965. http://id.nlm.nih.gov/mesh/2026/D002965
  2. Classification. In: Wikipedia. https://en.wikipedia.org/wiki/Classification
  3. Classification. In: Wikidata. https://www.wikidata.org/wiki/Q13582682