callosomarginaladj.
/kəˌləʊsəʊˈmɑːdʒᵻnl/, /kəˌləʊsəʊˈmɑːdʒn̩l/, U.S. /kəˌloʊsoʊˈmɑrdʒən(ə)l/ Anatomy and Zoology.
Originally: designating the cingulate sulcus, which lies between the cingulate gyrus and the superior frontal gyrus on the medial surface of the brain. In later use also: of or relating to this sulcus; spec. designating a large branch of the anterior cerebral artery which follows the course of this sulcus.Former alternative names for the cingulate gyrus and the superior frontal gyrus were callosal gyrus and marginal gyrus, respectively.
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the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [adjective] > commissure
commissural1815
callosal1852
callosomarginal1861
precommissural1864
supra-optic1900
chiasmatic1912
suprachiasmatic1938
1861 T. H. Huxley in Proc. Zool. Soc. 253 The sulcus called by Gratiolet ‘fronto-parietal’, a name which involves an ambiguity, and for which I therefore propose to substitute ‘calloso-marginal’.
1876 Quain's Elements Anat. (ed. 8) II. 531 The calloso-marginal fissure (cmf) commences beneath the anterior extremity of the corpus callosum.
1961 Lancet 30 Sept. 746/1 An inter-hemispheric clot may be recognised..by separation of the callosomarginal from the pericallosal artery.
2006 Jrnl. Zoo & Wildlife Med. 37 394/2 A small 6–8 mm focus of hemorrhage was present in the left cerebral cortex at the level of the callosomarginal branch of the anterior cerebral artery.
This entry has been updated (OED Third Edition, March 2016; most recently modified version published online December 2021).
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adj.1861