|ekspə|nenchəl, -pō|- adjective
Etymology: exponent (II) + -i- + -al
1. : of or relating to an exponent : involving a variable exponent
an exponential expression
2. : approximately expressible by an exponential equation
exponential distribution
— used especially in indicating variation in which one variable factor depends upon another variable factor
culture is said to grow in an exponential manner; and the number of inventions is a function of the size of the cultural base — F.H.Hankins
• ex·po·nen·tial·ly -chəlē adverb