What is a base in mathterms?

When doing exponents, the base is the number that is a factor, however many times the power is.

Ex. 2^3 = 2*2*2

2 is the base and 3 is the power

x^4 = x*x*x*x

x is the base and 4 is the power

A base in geometry terms is the surface of a solid object stands on. The top of a solid object can also be a base, since it is parallel to the bottom. In other math terms, a base can be t he number that is going to be raised to a power.