What do no mean in esponial?

It seems you're asking about the word "no" in "esponial." However, "esponial" is not a recognized word in the English language.

It's possible you meant:

* "exponential," which refers to something increasing rapidly at a constantly growing rate.

* "essential," which means something absolutely necessary or important.

Please clarify what you meant by "esponial" so I can help you better understand the meaning of "no" in the correct context.