Definition of synovial in English:



  • Relating to or denoting a type of joint that is surrounded by a thick flexible membrane forming a sac into which is secreted a viscous fluid that lubricates the joint.

    • ‘The zygapophyseal joints are synovial joints between the articular processes.’
    • ‘Theories include vascular insufficiency or micro-fractures of the subchondral plate, with synovial fluid being forced from the synovial space into the bone.’
    • ‘Synovial membranes lining the inside of the joint produce synovial fluid that provides nutrition to articular cartilage.’
    • ‘Its tendon passes laterally through the same osteofibrous canal in the same synovial sheath as extensor digitorum longus and terminates on the fifth metatarsal.’
    • ‘The elbow joint is a synovial hinge joint limited to flexion and extension.’


Mid 18th century: from modern Latin synovia, probably formed arbitrarily by Paracelsus.