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

Inflected Forms

noun

• corpora callosa
  plural

Etymology

Origin of corpus callosum

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

Example Sentences

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

A continuous dialogue is going on between the two hemispheres, channeled through an immense bundle of nerves, the corpus callosum, the bridge between creativity and analysis, both of which are necessary to understand the world.

From "Cosmos" by Carl Sagan