/ Dictionary / Index M modulus of rigidity: Meaning and Definition of Find definitions for: mod'ulus of rigid'ity Pronunciation: [key] See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. modulus of elasticity modulus of torsion Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language