/,ekspəʊ'nenʃl; ,ɛkspo`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）.

adj technical
exponential growth/increase etc
exponential growth, increase etc becomes faster as the amount of the thing that is growing increases
　an exponential increase in travel
using a small number or letter slightly above and to the right of a number or letter that shows how many times a quantity is to be multiplied by itself
>exponentiallyadv