/ Dictionary / Index R rate-of-climb indicator: Meaning and Definition of Find definitions for: rate'-of-climb' in"dicator Pronunciation: (rāt'uv-klīm'), [key] — Aeron. Aeron. a flight instrument that indicates the rate of climb or descent of an aircraft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ratel rate of exchange Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language