Definitions for "Callosum"
The great band commissural fibers which unites the two cerebral hemispheres. See corpus callosum, under Carpus.
L. hard. Corpus callosum, a massive bundle of myelinated fibers connecting the two cerebral hemispheres. Galen described the corpus callosurn as a firm, tough body.
The great commisure of the brain between the cerebral hemispheres.
Keywords:  callum, latin, hard
Latin callum = hard.