se·cre·tionBrE/sɪˈkriːʃn/NAmE/sɪˈkriːʃn/noun (specialist) [U]theprocessbywhichliquidsubstancesareproducedbypartsofthebodyorplants分泌◆thesecretionofbilebytheliver肝脏分泌胆汁的过程[C, usually pl.]aliquidsubstanceproducedbypartsofthebodyorplants分泌物◆bodilysecretions人体分泌物