Accordion Definition

ə-kôrdē-ən
noun
A portable wind instrument with a small keyboard and free metal reeds that sound when air is forced past them by pleated bellows operated by the player.
American Heritage
A musical instrument with keys, metal reeds, and a bellows: it is played by alternately pulling out and pressing together the bellows to force air through the reeds, which are opened by fingering the keys.
Webster's New World

A small, portable, keyed wind instrument, whose tones are generated by play of the wind from a squeezed bellows upon free metallic reeds.

Wiktionary
Synonyms:
adjective
Having folds or bends like the bellows of an accordion.
Accordion pleats; accordion blinds.
American Heritage
Having folds, or folding, like the bellows of an accordion.
Accordion pleats.
Webster's New World
verb
(intransitive) To fold up, in the manner of an accordion.
Wiktionary

Other Word Forms of Accordion

Noun

Singular:
accordion
Plural:
accordions

Origin of Accordion

  • German Akkordion from Akkord chord from French accord harmony from Old French acorder to accord from Medieval Latin accordāre to bring into agreement accord

    From American Heritage Dictionary of the English Language, 5th Edition

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

    From Wiktionary

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