/ Dictionary / Index R radial keratotomy: Meaning and Definition of Find definitions for: ra'dial keratot'omy Pronunciation: [key] — Ophthalm. Ophthalm. a surgical technique for correcting nearsightedness by making a series of spokelike incisions in the cornea to change its shape and focusing properties. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radial engine radial motion Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language