Source : Webster's Revised Unabridged Dictionary (1913)

Synovia \Syn*o"vi*a\, n. [NL., perhaps fr. Gr. sy`n with + L.
   ovum egg: cf. F. synovie.] (Anat.)
   A transparent, viscid, lubricating fluid which contains mucin
   and secreted by synovial membranes; synovial fluid.

Source : WordNet®

synovia
     n : viscid lubricating fluid secreted by the membrane lining
         joints and tendon sheaths etc. [syn: {synovial fluid}]