noun
accordion
uh-KAW-dee-uhn
noun
1
A boxy musical instrument with folding bellows, played by pressing buttons or keys while squeezing air through it.
"He played a lively tune on the accordion at the street festival."
2
A user-interface element made of sections that expand and collapse, similar to the instrument's folds.
"Click each heading to expand the accordion and reveal more details."
How to Use Accordion
Learner’s notes
Common pairings
play the accordion
accordion menu
accordion fold
Word Forms
accordioned past tense, accordions plural, accordions singular
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He played a lively tune on the _____ at the street festival.
Etymology
Borrowed in the 1830s from German Akkordeon, from Akkord ("harmony, chord"), itself from French accord — the same root as the word "accord."