1. the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect; [syn: hormone, endocrine, internal secretion]
WordNet (r) 3.0 (2006):
internal secretion
n 1: the secretion of an endocrine gland that is transmitted by
the blood to the tissue on which it has a specific effect
[syn: hormone, endocrine, internal secretion]