acc. Your browser does not support the audio element. [ Abbreviation ] Definition 1. The abbreviation for the term accompaniment or accompany. 2. The abbreviation for the French term accord (chord) or the Italian term accordo (chord). See also [Eng.] chord; [Fr.] accord (m); [Ger.] Akkord (m); [It.] accordo (m); [Sp.] accorde; [Abbr.] acc. 3. The abbreviation for accordion. See also [Eng.] accordion; [Fr.] accordéon (m); [Ger.] Akkordeon (m); [Ger.] Ziehharmonika (f); [Ger.] Handharmonika (f); [It.] fisarmonica (f); [Sp.] acordéon (m); [Abbr.] acc. Share Share on Facebook (opens in a new tab) Share on X (opens in a new tab) Last Updated: 2016-06-20 01:25:33