Exponential (adjective)

1. Relating to an exponent or involving a mathematical exponent.
2. Relating to or characterized by rapid or dramatic growth.

Origin:

Early 17th century: from late latin exponentialis, from exponere (see expound).

Examples:

1. The company's growth has been exponential.
2. The population growth is exponential.
3. The value of the stock increased exponentially.
4. The increase in temperature was exponential.
5. The equation is an exponential function.