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English Wikipedia has an article on:
A piano accordion

Alternative forms[edit]


First attested in 1831. From German Akkordeon, from Akkord (harmony), from French accord, from Old French acorder, based on Italian accordare (to tune). See also accord.


  • (Received Pronunciation) IPA(key): /əˈkɔ(ɹ).di.ˌən/
  • (US) IPA(key): /ə.ˈkɔɹ.di.ən/
  • (file)
  • Hyphenation: ac‧cord‧i‧on


accordion (plural accordions)

  1. A box-shaped musical instrument with means of keys and buttons, whose tones are generated by play of the wind from a squeezed bellows upon free metallic reeds.
    Hypernym: squeezebox
    Coordinate term: concertina
    • 1869, Mark Twain, Innocents Abroad:
      A disreputable accordion that had a leak somewhere and breathed louder than it squawked.
  2. (graphical user interface) A vertical list of items that can be individually expanded and collapsed to reveal their contents.
  3. (Can we verify(+) this sense?) (figurative) A set of items (concepts, links, or otherwise) that can be packed and unpacked cognitively, or their representation as a set of virtual objects.
    See also: telescoping

Derived terms[edit]



See also[edit]


accordion (third-person singular simple present accordions, present participle accordioning, simple past and past participle accordioned)

  1. (transitive, intransitive) To fold up, in the manner of an accordion
    • 1980, Stephen King, The Mist:
      I slit the wrapping with my pocketknife and the clothesline accordioned out in stiff loops.
    • 2000 December 29, Charles Dickinson, “Qi”, in Chicago Reader[1]:
      Still in reverse, she goosed the gas and accordioned the running board a fraction of an inch more.
    • 2005, Cory Doctorow, Someone Comes to Town, Someone Leaves Town[2]:
      It accordioned down and he tugged the shirt around it so that it came free [] .