IPA: /ˈæn.tiˌʌl.sər/
KK: /ˈæntiˌʌlsər/
Describing something that helps to prevent or reduce the occurrence of ulcers in the body.
The doctor prescribed an antiulcer medication to help with my stomach issues.
Antiulcer → It is formed from "anti-" (meaning against) and "ulcer" (from Latin "ulcus", meaning sore or wound). The word "antiulcer" refers to something that works against or prevents ulcers.
Think of 'against' ('anti-') something that causes pain or sore ('ulcer') — that's why antiulcer means something that prevents or treats ulcers.