Biliary/ˈbɪlieri/ Definition 1 of 1Pro Tip 1/3Medical Context Used mainly in medical or healthcare settings to describe conditions related to bile ducts. Biliary obstructions can lead to severe liver problems. Pro Tip 2/3Technical Term This is a technical term, not typically used in everyday conversations. The surgeon performed a biliary bypass. Pro Tip 3/3Disease Specific When someone has a 'biliary disease', it means their bile ducts are not working properly. Biliary diseases often require surgery.