Concept: third person form

Definition

[[A third person form is a form that can refer to a referent that is neither the speaker/producer nor the addressee.]]

Croft's comparative concept
third person pronoun (CXN):

third person pronoun (CXN) = a personal pronoun used for contextual reference to a person that is neither the speaker nor an addressee, or group of persons that does not include the speaker or addressee. Example: they is a third person pronoun, referring to a group, none of whom is the speaker or the addressee. (Section 3.1.1)

Wikipedia
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SIL Glossary
third person deixis