Definition of "synovium" []

• The soft tissue which lines the non-cartilaginous surfaces within joints with cavities (synovial joints). It may emit a joint-lubricating fluid called synovial fluid or simply, synovia. (noun)

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• "RA occurs in people who develop a rogue immune system that attacks the tissue that lines the joint cavities called the synovium leading to degeneration of the joints and the symptoms of the disease."
• "Rheumatoid arthritis (RA) is traditionally considered a chronic, inflammatory autoimmune disorder that causes the immune system to attack the joints and affects in particular a membrane, called synovium, which lines each movable joint."
• "TAIPEI, Taiwan, April 10 / PRNewswire / -- Rheumatoid arthritis (RA) is a systemic disease or an autoimmune disorder in which the body's defense system attacks the joints through the thin layer of cells called the synovium that lines and lubricates the joints."