an exuded substance, in particular 渗出物,尤指 ■(Medicine)a mass of cells and fluid that has seeped out of blood vessels or an organ, especially in inflammation (医)脓液 ■(Botany & Entomology)a substance secreted by a plant or insect (植,昆)(植物或昆虫的)分泌物,溢泌物,渗出物
语源
late 19th cent.: from Latin exsudat- 'exuded', from the verb exsudare