Introduction: What is MeSH?

MeSH is:

• an acronym for Medical Subject Headings.
• the U.S. National Library of Medicine's controlled vocabulary (thesaurus).
• a vocabulary that gives uniformity and consistency to the indexing and cataloging of biomedical literature.
• a distinctive feature of MEDLINE.
• arranged in a hierarchical manner called the MeSH Tree Structures.
• updated annually.