/ Dictionary / Index M macrolith: Meaning and Definition of Find definitions for: mac•ro•lith Pronunciation: (mak'ru-lith"), [key] — n. Archaeol. a stone tool about 1 ft. (30 cm) long. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macrolinguistics macromere Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language