The Collaborative International Dictionary
Synovial \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.
Wiktionary
n. A viscous, nonnewtonian fluid found in the cavity of synovial joints, and whose main purpose is to reduce friction between the articular cartilage of synovial joints during movement.
WordNet
n. viscid lubricating fluid secreted by the membrane lining joints and tendon sheaths etc. [syn: synovia]
Wikipedia
Synovia, more often called synovial fluid, is a viscous, non-Newtonian fluid found in the cavities of synovial joints. With its egg white–like consistency, the principal role of synovial fluid is to reduce friction between the articular cartilage of synovial joints during movement.
Usage examples of "synovial fluid".
The foreign bodies must be allowed to encyst and the synovial fluid will re-form.
Not too easy, because natural cartilage is as smooth as glass, and it's made free from friction by applying synovial fluid to the flexible parts of the joint.
Red blood clots lay on the ground, with bits of oily synovial fluid from a cracked joint.