#flexion  act of bending a joint; especially a joint between the bones of a limb so that the angle between them is decreased
  exclusion:  extension.stretching
  supertype:  bending  the act of bending something
  subtype:  flex  the act of flexing; "he gave his biceps a flex to impress the ladies"
  subtype:  dorsiflexion  the act of bending backward (of the body or a body part)

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