joint science definition

1. Anatomy A usually movable body part in which adjacent bones are joined by ligaments and other fibrous tissues. See also ball-and-socket joint, hinge joint.
2. Zoology A point in the exoskeleton of an invertebrate at which movable parts join, as along the leg of an arthropod.
3. Botany A point on a plant stem from which a leaf or branch grows.

joint

anterior view of a knee joint showing arrangement of ligaments and menisci