CALLOSAL By N., Pam M.S. - April 7, 2013 adj. pertaining to the corpus callosum of the brain. For example, the callosal sulcus is a fissure or groove closely associated with the corpus callosum. CALLOSAL: "As a descriptive word, the term callosal always points to the corpus callosum." Related Psychology Terms CALLOSAL SULCUS CALLOSAL SULCUS RIGHT HEMISPHERE CALLOSAL CALLOSAL APRAXIA SPLIT BRAIN CALCARINE FISSURE CALLOSAL APRAXIA STRANGE-HAND SIGN SPLENIUM Cite this page: N., Pam M.S., "CALLOSAL," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/callosal/ (accessed October 21, 2020).