exponential
/ˌekspəuˈnenʃl; ˌɛkspo`nɛnʃəl/ adj
(mathematics 数)
1 of or indicated by an exponent(3) 指数的; 幂的
24 is an exponential expression. 24是一个指数式.
2 produced or indicated by multiplying a set of numbers by themselves 由指数产生或表示的
an exponential function 指数函数
(fig 比喻) exponential (ie more and more rapid) growth 越来越快的增长
an exponential curve, eg on a graph indicating population increase 指数曲线（如人口增长示意图上的）.