/ Dictionary / Index M modularity: Meaning and Definition of Find definitions for: mod•u•lar•i•ty Pronunciation: (moj"u-lar'i-tē, mod"yu-), [key] — n. the use of individually distinct functional units, as in assembling an electronic or mechanical system. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. modular arithmetic modularize 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