/ Thesaurus / P Synonyms of protirelin Find synonyms for: Noun1. thyrotropin-releasing hormone, TRH, thyrotropin-releasing factor, TRF, protirelin, hormone, endocrine, internal secretionusage: hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitaryWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language