adj.1 Math. of or indicated by a mathematical exponent.
2 (of an increase etc.) more and more rapid.
Phrases and idioms:
exponential function Math. a function which increases as a quantity raised to a power determined by the variable on which the function depends. exponential growth Biol. a form of population growth in which the rate of growth is related to the number of individuals present.
Etymology: F exponentiel (as EXPONENT)