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The great band commissural fibers which unites the two cerebral hemispheres. See corpus callosum, under Carpus.

Of the callosum.

A body, living or dead; the corporeal substance of a thing. Corpus callosum (k; pl. Corpora callosa (-s Etym: [NL., callous body] (Anat.), the great band of commissural fibers uniting the cerebral hemispheries. See Brain. -- Corpus Christi (kr Etym: [L., body of Christ] (R. C. Ch.), a festival in honor of the eucharis…

The kneelike bend, in the anterior part of the callosum of the brain.

up of Mammalia, including the marsupials and monotremes; - - so called because the corpus callosum is rudimentary.

ther with the opossums of America. They differ from ordinary mammals in having the corpus callosum very small, in being implacental, and in having their young born while very immature. The female generally carries the young for some time after birth in an external pouch, or marsupium. Called also Marsupiata.…

The thickened posterior border of the corpus callosum; -- so called in allusion to its shape.