Callosotomy is a medical term that refers to a surgical procedure that involves cutting a part or the entire corpus callosum, the band of neural fibers that connects the two hemispheres of the brain. There are several synonyms for the word callosotomy that are used in medical literature and research. One such synonym is commissurotomy, which means cutting the commissure or the connecting structure between two organs. Another synonym that is used interchangeably with callosotomy is corpus callostomy, which refers specifically to the severing of the corpus callosum. Other synonyms include corpus callosal section, interhemispheric disconnection, and interhemispheric commissurotomy.