standards > terminology artifact > DOI:10.25504/FAIRsharing.119q9t
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ready UMLS Semantic Network

General Information
The US National Library of Medicine has developed the Unified Medical Language System (UMLS), whose goal it is to provide integrated access to a large number of biomedical resources by unifying the vocabularies that are used to access those resources. The UMLS Metathesaurus interrelates more than 150 controlled vocabularies in the biomedical domain. The UMLS coverage is quite extensive, including not only many concepts in clinical medicine, but also a large number of concepts applicable to the broad domain of the life sciences. In order to provide an overarching conceptual framework for all UMLS concepts, the UMLS Semantic Network, an upper-level ontology, has been developed. The Semantic Network provides a consistent categorization of all concepts represented in the UMLS Metathesaurus. The links between the semantic types provide the structure for the network and represent important relationships in the biomedical domain. The Semantic Network consists of (1) a set of broad subject categories, or Semantic Types, that provide a consistent categorization of all concepts represented in the UMLS Metathesaurus, and (2) a set of useful and important relationships, or Semantic Relations, that exist between Semantic Types.


Countries that developed this resource United States

Created in 1990

Taxonomic range

How to cite this record UMLS Semantic Network; UMLS Semantic Network; DOI:; Last edited: Jan. 29, 2020, 10:53 a.m.; Last accessed: Oct 26 2021 9:23 a.m.

Publication for citation  An upper-level ontology for the biomedical domain. McCray AT; Comp Funct Genomics ; 2008; 10.1002/cfg.255;

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Record added: Oct. 24, 2017, 9:41 a.m.
Record updated: Jan. 29, 2020, 10:53 a.m. by The FAIRsharing Team.

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An upper-level ontology for the biomedical domain.

McCray AT
Comp Funct Genomics 2008

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AgroPortal is an ontology repository for agronomy as well as food, plant, agriculture and biodiversity sciences. It provides ontology hosting, search, versioning, visualization, comment, and recommendation; enables semantic annotation; stores and exploits ontology alignments; and enables interoperation with the semantic web. To align with the needs of the agronomy community, AgroPortal uses SKOS vocabularies and trait dictionaries) and supported features (offering detailed metadata and advanced annotation capabilities).

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