Difference between Ampule and Ampoule

What is the difference between Ampule and Ampoule?

Ampule as a noun is a small hermetically sealed vial, often used to contain a sterile solution suitable for injection. while Ampoule as a noun is a small hermetically sealed vial containing a sterile solution suitable for injection.

We hope you now know whether to use Ampule or Ampoule in your sentence.