exudate
/ˈeksjuːdeɪt/noun
1- an exuded substance, in particular渗出物, 尤指：
1.1
- Medicine a mass of cells and fluid that has seeped out of blood vessels or an organ, especially in inflammation【医】渗出物, 渗出液。
1.2
- Botany & Entomology a substance secreted by a plant or insect【植, 昆】（植物或昆虫分泌的）渗出液。
词源
late 19th cent.: from Latin exsudat- 'exuded', from the verb exsudare.