To elaborate or produce some physiologically active substance ( e.g., enzyme, hormone, metabolite) by a cell and to deliver it into blood, body cavity, or sap, either by direct diffusion, cellular exocytosis, or by means of a duct. [L. se-cerno, pp. -cretus, to separate]
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se·crete si-'krēt vt, se·cret·ed; se·cret·ing to form and give off (a secretion) <cells secreting mucus>
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se·crete (se-krētґ) [L. secernere, secretum to separate] to separate or elaborate cell products.Medical dictionary. 2011.