The Collaborative International Dictionary of English v.0.48:

Ampliation \Am`pli*a"tion\, n. [L. ampliatio: cf. F.
   ampliation.]
   1. Enlargement; amplification. [R.]
      [1913 Webster]

   2. (Civil Law) A postponement of the decision of a cause, for
      further consideration or re-argument.
      [1913 Webster]