Synovial :: Synovia (n.) A transparent, viscid, lubricating fluid which contains mucin and secreted by synovial membranes; synovial fluid..
Synovitis :: Synovial (a.) Of or pertaining to synovia; secreting synovia.
Tenosynovitis :: Tenosynovitis (n.) Inflammation of the synovial sheath enveloping a tendon.