In terminology management, a termbase, or term base (a contraction of terminology and database), is a database consisting of concept-oriented terminological entries (or ‘concepts’) and related information, usually in multilingual format. Entries may include any of the following additional information:

A termbase allows for the systematic management of approved or verified terms and is a powerful tool for promoting consistency in terminology.

In a broader sense, "term base" in computer science is used to designate any resource that provides terminology information. In addition to term bases in the terminological sense, this includes knowledge graphs and ontologies.