In medicine, action taken to decrease the chance of getting a disease or condition.

To decrease the chance of stomach upset, this drug is best taken with food.

This decreases the chance of complications occurring in both eyes at the same time.

They see it as decreasing the chance that their savings will be wiped out.

So long as you can decrease the chance of an initial intrusion that's the better choice.

Since most burns happen in the home, simple safety measures decrease the chance of anyone getting burned.

"You could, Governor, but that would significantly decrease your chances of being elected."

That will decrease the chance of damaging and unnecessary conflicts.

Schooling in fish (and this is not the only example) serves to decrease the chance of being eaten.

Every day without treatment only decreases your sister's chances of a full recovery.