Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Usage of the various types of Metathesaurus contents
| Type of Metathesaurus contents | % of users |
|---|---|
| Concept names and synonyms | 93% |
| Hierarchical relationships | 70% |
| Non-hierarchical relationships | 36% |
| Unique identifiers | 56% |
| Definitions | 56% |
| Mappings | 56% |
| Co-occurrence data | 17% |
