IPA: /ˈɒstəmi/
KK: /ˈɑːstəmi/
A medical procedure that creates an artificial opening in the body for waste to leave, often performed after surgery on the intestines.
After her surgery, she had to adjust to life with an ostomy bag.
Ostomy → It is formed from "ostium" (from Latin, meaning mouth or opening) and the suffix "-omy" (from Greek "-omia", meaning a surgical procedure). The word "ostomy" refers to a surgical procedure that creates an opening in the body.
Think of 'ostium' meaning 'opening' — an ostomy is a procedure that creates an opening in the body.