Main Entry: flex·ion

Pronunciation: \ˈflek-shən\

Function: noun

Etymology: Latin flexion-, flexio, from flectere

Date: 1615

1 : the act of flexing or bending
2 : a part bent : bend
3 : inflection 3
4 a : a bending movement around a joint in a limb (as the knee or elbow) that decreases the angle between the bones of the limb at the joint — compare extension 3b b : a forward raising of the arm or leg by a movement at the shoulder or hip joint