/ Dictionary / Index M mechanical engineering: Meaning and Definition of Find definitions for: mechan'ical engineer'ing Pronunciation: [key] the branch of engineering dealing with the design and production of machinery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mechanical drawing mechanical equivalent of heat Related Content Daily Word Quiz: diurnal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language