serosynovial

se·ro·sy·no·vi·al

(sē'rō-si-nō'vē-ăl),
Relating to serum and also synovia.

serosynovial

(sē″rō-sĭ-nō′vē-ăl) [L. serum, whey, + synovia, joint fluid]
Concerning serous and synovial material.