anaphor

from WordNet (r) 3.0 (2006)

anaphor
    n 1: a word (such as a pronoun) used to avoid repetition; the
         referent of an anaphor is determined by its antecedent

from The Collaborative International Dictionary of English v.0.48

anaphor \anaphor\ n.
   A word (such as a pronoun) used to avoid repetition; the
   referent of an anaphor is determined by its antecedent.
   [WordNet 1.5]

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