Chiari malformation

noun

A malformation of the brain, consisting of a downward displacement of the cerebellar tonsils through the foramen magnum, sometimes causing hydrocephalus.

Meanings

nounChiari malformation (countable and uncountable, plural Chiari malformations)

plural Chiari malformations

  1. countableuncountablemedicineA malformation of the brain, consisting of a downward displacement of the cerebellar tonsils through the foramen magnum, sometimes causing hydrocephalus.

    Synonyms: Arnold-Chiari malformation

Synonyms & antonyms

nounA malformation of the brain, consisting of a downward displacement of the cerebellar tonsils through the foramen magnum, sometimes causing hydrocephalus.

Origin

Named after Austrian pathologist Hans Chiari.

Full word history & related roots →

Translations

Japanese アーノルド・キアリ奇形
  • アーノルド・キアリ奇形 (ānorudo-kiari kikei)a malformation of the brain
Portuguese malformação de Arnold-Chiari, malformação de Chiari
  • malformação de Arnold-Chiaria malformation of the brain
  • malformação de Chiaria malformation of the brain
Cite this entry
APA

Chiari malformation. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Chiari%20malformation

MLA

“Chiari malformation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Chiari%20malformation. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Chiari malformation,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Chiari%20malformation.

Source: Chiari malformation on Wiktionary, CC BY-SA 4.0.