callosomarginal

cal·lo·so·mar·gin·al

(ka-lō'sō-mar'jin-ăl),
Relating to the corpus callosum and the cingulate gyrus; denoting the sulcus between them.
See also: sulcus of corpus callosum.

callosomarginal

(kă-lō″sō-măr′jĭ-năl) [L. callus, hardened skin, + margo, margin]
Pert. to the corpus callosum and marginal gyrus; marking the sulcus between them.