Bunion definition

bŭnyən
Frequency:
A painful, inflamed swelling of the bursa at the first joint of the big toe, characterized by enlargement of the joint and lateral displacement of the toe.
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An inflammation and swelling of the bursa at the base of the big toe, with a thickening of the skin.
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A painful, inflamed swelling of the bursa at the first joint of the big toe, characterized by enlargement of the joint and lateral displacement of the toe.
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(pathology) A bump or bulge on the first joint of the big toe caused by the swelling of a sac of fluid under the skin.
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Other Word Forms

Noun

Singular:
bunion
Plural:
bunions

Origin of bunion

  • Probably alteration of obsolete bunny swelling from Middle English bony perhaps from Old French bugne bun1

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

  • From alteration of earlier bunny (“lump, swelling”), from Middle English bony, boni (“bunion, swelling”); or perhaps from Italian bugnone (“a knob, boil, blain”), an augmented form of Italian bugno (“beehive”); both Middle English and Italian words from Old French bugne, buigne, bune (“bump, knob, swelling”), from Old Norse bunga (“an elevation, bulge”) or from Old Frankish *bungjo (“a swelling, lump, bump”), both Old Norse and Old Frankish from Proto-Germanic *bungô, *bunkô (“lump, clump, heap, crowd”), from Proto-Indo-European *bʰenǵʰ- (“thick, dense, fat”). Cognate with Dutch bonk (“lump, clump”), German Bunge (“swelling, tuber”).

    From Wiktionary