Breadcrumb Home > Dictionary > Index O Occam's razor: Meaning and Definition of Find definitions for: Oc'cam's ra'zor Pronunciation: [key] the maxim that assumptions introduced to explain a thing must not be multiplied beyond necessity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Occam occas. ✖ Related Content Daily Word Quiz: restive Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language