Meaning

noun the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect

noun any of the glands of the endocrine system that secrete hormones directly into the bloodstream

adjective of or belonging to endocrine glands or their secretions

originFrom French endocrine, from endo- + Ancient Greek κρίνω (krínō, “to separate, also to secrete”).

Etymology from Wiktionary, CC BY-SA 3.0