Contributor
A Contributor is a person that contributes to the creation and maintenance of a terminology all terms of which have a definition that links these terms with a criterion that is used within the scope of that terminology for determining whether or not something is an instance (example) of the semantic unit to which the term refers.
Contributers typically assist the curators of such terminologies. They may be authors (which helps them to make contributions that fit the texts that they author), but that is not a requirement.