Breadcrumb Home > Dictionary > Index G Guido d'Arezzo: Meaning and Definition of Find definitions for: Gui•do d'A•rez•zo Pronunciation: (gwē'dô dä-ret'tsô), [key] — (Guido Aretinus) (“Fra Guittone”), c995–1049?, Italian monk and music theorist: reformer of musical notation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Guido guidon TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: erpsichore Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language