Definition of corpus callosum in English:

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corpus callosum

Pronunciation: /kəˈləʊsəm/

noun (plural corpora callosa /-sə/)

A broad band of nerve fibres joining the two hemispheres of the brain.
Example sentences
  • The mass extended into the left hemisphere through the anterior corpus callosum and obliterated the frontal horn of the right lateral ventricle.
  • In this preparation the corpus callosum, caudate nucleus, and most brainstem structures have been removed.
  • In addition, in murderers' brains, the corpus callosum - a band of tissue that links the right and left hemispheres - also functioned poorly.


Early 18th century: from corpus and Latin callosum, neuter of callosus 'tough'.

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