/ Dictionary / Index R Rossby: Meaning and Definition of Find definitions for: Ross•by Pronunciation: (rôs'bē, ros'-), [key] 1898–1957, U.S. meteorologist, born in Sweden. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ross and Cromarty Ross Dependency Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language