From Longman Dictionary of Contemporary Englishthird personˌthird ˈperson noun 1 → the third person2 → in the third person → first person, second person
Examples from the Corpus
third person• In our study of successful entrepreneurial partnerships, few remain successful when they are joined by a third person.• It was like having a third person, an onlooker, in the room.• Sometimes a third person would handle the lights and audio.• Because defamation law is concerned with reputation, a statement can be defamatory only if it is communicated to a third person.• She then tries to get as much as she can while a third person holds the mirror.• I mentioned earlier that the gender distinction in Arabic applies to the second as well as third person.• I was angry to hear Steve talk about me in the third person. 