bandonion
noun
ban·do·ni·on
ban-ˈdō-nē-ˌän
variants or bandoneon
ban-ˈdō-nē-ˌän
plural -s
: an accordion popular in South America having buttons for both treble and bass notes with each bass button representing or sounding a single note not a chord
Word History
Etymology
bandonion from German, from Heinrich Band, 19th century German musician, its inventor + German -on- (as in harmonika harmonica, accordion, from English harmonica) + -ion (as in akkordion accordion); bandoneon, from Spanish bandoneón, from German bandonion