[mass noun](in living organisms and cells) the process of eliminating or expelling waste matter (生物体和细胞中)排泄;分泌 ■[count noun]a product of this process 排泄物;分泌物 bodily excretions. 机体排泄物。
语源
early 17th cent.: from French excrétion or Latin excretio(n-), from excernere 'sift out' (see excrete)