/ Dictionary / Index A aortic stenosis: Meaning and Definition of Find definitions for: aor'tic steno'sis Pronunciation: [key] — Pathol. Pathol. abnormal narrowing of the aorta, esp. of its orifice, usually as a result of rheumatic fever or embryologic anomalies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aortic insufficiency aortic valve 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