mesencephalicadj.
/ˌmɛsɛnsᵻˈfalɪk/, /ˌmɛsɛŋkɛˈfalɪk/, U.S. /ˈˌmɛzənsəˈfælɪk/; see also meso- comb. form. Anatomy and Zoology.
Of, relating to, or connected with the mesencephalon (midbrain). mesencephalic flexure n. an upward flexure of the developing brain which marks the division between the mesencephalon and the rhombencephalon (hindbrain); cf. mesocephalic adj. 1.
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the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [adjective] > regions of brain
mesencephalic1846
prosencephalic1846
mesocephalic1859
rhinal1868
procerebral1890
telencephalic1896
pretectal1925
1846 R. Owen Lect. Compar. Anat. Vertebr. Animals i. 181 The casciculi continued forwards from the parietes of the third ventricle or mesencephalic basis.
1851 W. B. Carpenter Princ. Gen. & Compar. Physiol. (ed. 3) §320 i These segments [of the skull] are named (proceeding from behind forwards) the Epencephalic, the Mesencephalic, the Prosencephalic, and the Rhinencephalic, according to the divisions of the brain to which they respectively correspond.
1880 A. Günther Introd. Study of Fishes 86 Mesencephalic arch.
1890 Proc. Royal Soc. 1889–90 47 455 The prochordal plate send off paired processes directly upwards in the mesencephalic flexure.
1964 S. Duke-Elder Parsons' Dis. Eye (ed. 14) iv. 39 From these muscles afferent fibres run centrally, probably by the third nerve to the mesencephalic nucleus of the fifth nerve.
1980 Jrnl. Compar. Neurol. 193 741 The mesencephalic flexure serves in all cases as a landmark for Malpighi's tripartite subdivision of the brain.
1993 S. J. Ettinger Pocket Compan. Textbk. Vet. Internal Med. lxi. 235 Hydrocephalus is usually rapidly progressive when an inflammatory process obstructs the mesencephalic duct.
This entry has been updated (OED Third Edition, September 2001; most recently modified version published online March 2022).
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adj.1846