/ Thesaurus / I Synonyms of internal secretion Find synonyms for: Noun1. hormone, endocrine, internal secretion, secretionusage: the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effectWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language