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

Left says, On the corpus callosum, that massive highway of three hundred million axons, in a tiny wood hut, on the verge of collapse. — Weike Wang, New Yorker, 31 July 2025

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

On the other hand, Maguire has long doubted that mutations in such important genes, used in nearly all cells, could cause defects only in the corpus callosum, and only in speech. — Amber Dance Knowable Magazine, Smithsonian Magazine, 4 Sep. 2020

Word History

Etymology

borrowed from New Latin, literally, "tough body"

First Known Use

1677, in the meaning defined above

Rhymes for corpus callosum

• abomasum
• become
• checksum
• humdrum
• income
• outcome
• pisum
• succumb
• therefrom
• wherefrom
• bum
• chum

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