WordReference Random House Unabridged Dictionary of American English © 2017
af•fix•a•tion  (af′ik sāshən),USA pronunciation n. 
  1. affixture.
  2. Grammarthe process of inflection or derivation that consists of adding an affix.
  • affix + -ation 1850–55

'affixation' also found in these entries:

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