/ Dictionary / Index C corticosterone: Meaning and Definition of Find definitions for: cor•ti•cos•ter•one Pronunciation: (kôr"ti-kos'tu-rōn", -kō-stu-rōn'), [key] — n. Biochem. a steroid hormone, secreted by the adrenal cortex, that is involved in regulation of the water and electrolyte balance of the body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: corticosterone (Thesaurus) corticosteroid corticotropin Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language