The thick posterior part of the corpus callosum of the brain.
- ‘Beneath the splenium of the corpus callosum, the dentate gyrus becomes flattened and smooth and continues on to the dorsal surface of the corpus callosum as the thin gyrus fasciolaris.’
- ‘Above the splenium of the corpus callosum, the cingulate sulcus turns abruptly upwards to reach the superior margin of the hemisphere.’
- ‘The great cerebral vein can be seen curving below the splenium of the corpus callosum to empty into the straight sinus.’
- ‘The two internal cerebral veins join beneath the splenium of the corpus callosum to form the great cerebral vein, but the site of union is not visible in this preparation.’
- ‘For example, the analysis found a relative increase in the distance between the superior colliculus and the splenium of the corpus collosum in patients.’
Mid 19th century: from Latin.