/ sɪˈkriːʃn; NAmE / noun ( technical )
1.
[ U ] the process by which liquid substances are produced by parts of the body or plants :
the secretion of bile by the liver
2.
[ C , usually pl. ] a liquid substance produced by parts of the body or plants :
bodily secretions
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WORD ORIGIN
mid 17th cent.: from French sécrétion or Latin secretio(n-) separation, from secret- moved apart, from the verb secernere .