The thing, person, concept to which a word / phrase/ text etc. refers: the thing 'out there' as opposed to the language used to refer to it. register: The way language is used in a given social setting: e.g. informal register.

the noun for which a pronoun stands.

The thing, object or idea that a symbol (e.g., a word, phrase or sign) stands for or refers to.

the first term in a proposition; the term to which other terms relate

The referent of a metalevel is that term it is metalevel of. The referent of a task is the result value of that task.

This is the person or organisation who receives the foreign national in the Netherlands. A person or organisation in the Netherlands can also act as an administrative referent for a foreign national. In this case the referent only arranges the administrative part of the procedure.

See link.