/ Dictionary / Index G goitrogen: Meaning and Definition of Find definitions for: goi•tro•gen Pronunciation: (goi'tru-jun, -jen"), [key] — n. any goiter-producing substance, as thiouracil. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: goitrogen (Thesaurus) goiter goitrogenic Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language