accordion

• accordeon (dated)

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/

• Audio (US):

  (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.
4. (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

• → Irish: acordán
• → Thai: แอกคอร์เดียน (ɛ́k-kɔɔ-dîian)

• bandoneon
• concertina

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 […] .

• Concordia