/ Dictionary / Index M mensuration: Meaning and Definition of Find definitions for: men•su•ra•tion Pronunciation: (men"shu-rā'shun, -su-), [key] — n. the branch of geometry that deals with the measurement of length, area, or volume. the act or process of measuring. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mensuration (Thesaurus) mensural notation mensurative Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language