\Syn*o"vi*al\, a. [Cf. F. synovial.] (Anat.)
Of or pertaining to synovia; secreting synovia.
{Synovial capsule}, a closed sac of synovial membrane
   situated between the articular surfaces at diarthrodial
   joints.
{Synovial fluid}, synovia.
{Synovial membrane}, the dense and very smooth connective
   tissue membrane which secretes synovia and surrounds
   synovial capsules and other synovial cavities.