corpus callosum

noun

corpus cal·​lo·​sum -ka-ˈlō-səm 

-kə-

plural corpora callosa -ka-ˈlō-sə 

-kə-

: the great band of commissural fibers uniting the cerebral hemispheres of higher mammals including humans see brain illustration

Examples of corpus callosum in a Sentence

Recent Examples on the Web

The corpus callosum is the brain structure that connects the two hemispheres of the brain. —Carrie Madormo, Rn, Health, 28 Oct. 2024

The theory originated from the work of psychologist Roger W. Sperry, who studied people who had their corpus callosum surgically cut. —Carrie Madormo, Rn, Health, 28 Oct. 2024

The impulse is so ingrained that when patients have their corpus callosum severed, making communication between the two hemispheres of the brain impossible, the left hemisphere simply invents plausible explanations to account for inputs to the right side of the brain that the left side hasn’t seen. —Brian Klaas, The Atlantic, 10 Apr. 2024

This reduction was evident in a region called corpus callosum, which connects the right and left brain hemispheres. —Ignacio Amigo, Discover Magazine, 4 Nov. 2022

Word History

Etymology

borrowed from New Latin, literally, "tough body"

First Known Use

1677, in the meaning defined above

Medical Definition

corpus callosum

noun

corpus cal·​lo·​sum

-ka-ˈlō-səm, -kə-

plural corpora callosa -sə 

: the great band of commissural fibers uniting the cerebral hemispheres