/ Dictionary / Index S sternocostal: Meaning and Definition of Find definitions for: ster•no•cos•tal Pronunciation: (stûr"nō-kos'tl, -kô'stl), [key] — adj. Anat., Zool. of, pertaining to, or situated between the sternum and ribs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sternocleidomastoid sternpost Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language