/ Dictionary / Index D drag coefficient: Meaning and Definition of Find definitions for: drag' coeffi"cient Pronunciation: [key] — Aerodynamics. the ratio of the drag on a body moving through air to the product of the velocity and surface area of the body. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. drag chain dragée 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