/ Dictionary / Index N Nicol prism: Meaning and Definition of Find definitions for: Nic'ol prism" Pronunciation: (nik'ul), [key] — Optics. Optics. one of a pair of prisms used to produce and analyze plane-polarized light in a polarizing microscope. Also calledCf.(def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Nicolle Nicolson Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language