/ Dictionary / Index I interstock: Meaning and Definition of Find definitions for: in•ter•stock Pronunciation: (in'tur-stok"), [key] — n. Hort. a stock grafted between the understock and the scion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. interstitial-cell-stimulating hormone interstratify Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language