Noun
a word (such as a pronoun) used to avoid repetition; the referent of an anaphor is determined by its antecedent
Source: WordNetSome writers use the term anaphor only for retrospective anaphors and use the term cataphor for anticipatory anaphors. Source: Internet
The more usual case, where the pronoun follows the antecedent, it is called a retrospective anaphor. Source: Internet