Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Musicaccelerandoac‧cel‧e‧ran‧do /ækˌseləˈrændəʊ $ -ˈrɑːndoʊ/ adjective, adverb APMgetting gradually fasterOrigin accelerando (1800-1900) Italian “accelerating” ldoceonline.com