corpus callosum

American  

[kawr-puhs kuh-loh-suhm] / ˈkɔr pəs kəˈloʊ səm /

noun

Anatomy, Zoology.

• corpora callosa
  plural

1. a great band of deeply situated transverse white fibers uniting the two halves of the cerebrum in humans and other mammals.

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corpus callosum British  

/ kəˈləʊsəm /

noun

1. the band of white fibres that connects the cerebral hemispheres in mammals

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corpus callosum Scientific  

/ kə-lō′səm /

• corpora callosa
  plural

1. The transverse band of nerve fibers that connects the right and left cerebral hemispheres.

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Other Word Forms

Noun Inflected Forms

• corpora callosa
  plural

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Etymology

Origin of corpus callosum

1700–10; < New Latin: literally, firm body

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Example Sentences

See Examples For:

corpus callosum

The researchers also found that the corpus callosum, a major structure that connects the two halves of the brain and supports many critical functions, had deteriorated in mice receiving the treatment.

From Science Daily ● May 27, 2026

In the 1960s, Gazzaniga began conducting experiments in split-brain patients whose corpus callosum, which connects the two hemispheres, was absent.

From Salon ● May 26, 2025

One patient whose corpus callosum, which connects the brain’s hemispheres, had been severed was asked whether he believed in God.

From Washington Post ● Nov. 10, 2022

A rare condition called Agenesis of the corpus callosum meant the part that connects the two hemispheres in the brain had failed to develop.

From BBC ● Dec. 23, 2019

The left hemisphere and the right hemisphere are separated on top by a deep crack—the interhemispheric fissure—but joined in the middle of the brain by a thick mat of nerves—the corpus callosum.

From "Phineas Gage" by John Fleischman

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