/ Dictionary / Index D direction finder: Meaning and Definition of Find definitions for: direc'tion find"er Pronunciation: [key] — Radio. Radio. a receiver with a loop antenna rotating on a vertical axis, used to ascertain the direction of incoming radio waves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. direction cosine direction number Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language