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1. A message (spoken or written) that is introduced or inserted
   "with the help of his friend's interpolations his story was eventually told";
   - insertion
    
2. (mathematics) calculation of the value of a function between the values already known
    
3. The action of interjecting or interposing an action or remark that interrupts
   - interjection, interposition, interpellation

Derived forms: interpolations

Type of: break, calculation, computation, content, disruption, figuring, gap, interruption, message, reckoning, subject matter, substance

Encyclopedia: Interpolation