the act of passing solid or liquid waste matter from the body; the solid or liquid waste matter that is passed in this way 排泄 the excretion of toxic substances through the skin 有毒物质通过皮肤的排泄 It's the corals' excretions that become the scaffolding of coral reefs. 珊瑚的排泄物成为了珊瑚礁的支架。