Incretion

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incretion

[in′krē·shən]
(physiology)
An internal secretion.

Incretion

 

the formation and discharge by the glands of internal secretion of their products, or hormones (incretions), directly into the blood or lymph. In contrast, glands of external secretion (digestive, sebaceous, sweat) discharge their secretions through an excretory duct to the surface of the body or into the cavities of internal organs.