/ Dictionary / Index B Bayliss: Meaning and Definition of Find definitions for: Bay•liss Pronunciation: (bā'lis), [key] 1860–1924, English physiologist: codiscoverer of secretin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bay leaf bay lynx Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language