'exponentiation' definitions:

Definition of 'exponentiation'

(from WordNet)
noun
The process of raising a quantity to some assigned power [syn: exponentiation, involution]

Definition of 'exponentiation'

From: GCIDE
  • exponentiation \exponentiation\ n. the process of raising a quantity to some assigned power.
  • Syn: involution. [WordNet 1.5]