Middle English, from Medieval Latin & Latin; Medieval Latin ligamentum, from Latin, band, tie, from ligare
First Known Use: 14th century
Medical Definition of LIGAMENT
: a tough band of tissue that serves to connect the articular extremities of bones or to support or retain an organ in place and is usually composed of coarse bundles of dense white fibrous tissue parallel or closely interlaced, pliant, and flexible, but not extensible
: any of various folds or bands of pleura, peritoneum, or mesentery connecting parts or organs
Tough fibrous band of connective tissue that supports internal organs and holds bones together properly in joints. It is composed of dense bundles of fibres and spindle-shaped cells (fibroblasts and fibrocytes), with little ground substance. White ligament is rich in sturdy, inelastic collagen fibres; yellow ligament is rich in tough elastic fibres, which allow more movement. See alsotendon.