/ Dictionary / Index P paraxial: Meaning and Definition of Find definitions for: par•ax•i•al Pronunciation: (par-ak'sē-ul), [key] — adj. Optics. making a small angle with and lying close to the axis of an optical system: paraxial ray. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parawing parazoan Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language