the main controlled vocabulary used in the U.S. National Library of Medicine databases, including MEDLINE. MeSH is highly structured and lends itself to very powerful search techniques.
Formal and consistent vocabulary words used to describe the subject of a medical work. MeSH is provided by the National Library of Medicine for medical libraries.
A classification system developed and used at the National Library of Medicine and adopted by most health sciences libraries. The subjects are assigned specific letters and numbers for specific subjects. These subjects and numbers are displayed on the online record for any item in the library. ( See the black book available at the Health Sciences Libraries. )