A condyloid joint, also known as an ellipsoidal joint, is a type of joint found in the body that allows for movement in two directions. This joint consists of two bones that come together, where one bone has a rounded surface that fits into a concave surface of the other bone. The term "condyloid joint" is commonly used in the medical field, but there are also synonyms to describe this type of joint. These include ellipsoidal joint, bicondylar joint, and knuckle joint. Each of these synonyms captures the essence of the joint's shape and its ability to facilitate movement in multiple directions.