exponentiation

n. raising of a number to a power (in Computers - by using the command EXP or the letter E)

Exponentiation is a mathematical operation, written an, involving two numbers, the base a and the exponent n. When n is a positive integer, exponentiation corresponds to repeated multiplication:just as multiplication by a whole number corresponds to repeated addition:The exponent is usually shown as a superscript to the right of the base. The exponentiation an can be read as: a raised to the n-th power or a raised to the power n, or more briefly: a to the n-th power or a to the power n. Some exponents can be read in a certain way; for example a2 is usually read as a squared and a3 as a cubed.
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Noun
1. the process of raising a quantity to some assigned power
(synonym) involution
(hypernym) mathematical process, mathematical operation, operation