"Exponential" is an adjective that means of pertaining to an exponent or exponents, of pertaining to the constant "e," or of an equation having one or more unknown variables in one or more exponents. The word is common in mathematics, and its origins are French and Latin.
The Latin form of the word is "exponere," which means to put out. An example of an exponential function is "f(x) = 2(x)." "Exponential" can also mean to grow, expand, ascend or increase. Examples of using the word in a sentence include:
"The students have shown exponential growth over the school year."
"We are thrilled that our savings account has shown exponential growth."