transudate tran·su·date (trān-s&oomacr;'dāt', -sy&oomacr;'-, trān's&oobreve;-dāt', -sy&oobreve;-) or tran·su·da·tion (trān's&oobreve;-dā'shən, -sy&oobreve;-)
n.
A product of the process of passing through a membrane, pore, or interstice.
A substance that transudes.