Defn: Of or pertaining to the mesencephalon or midbrain.
MESENCEPHALON
Mes`en*ceph"a*lon, n. Etym: [NL. See Meso- and Encephalon.] (Anat.)
Defn: The middle segment of the brain; the midbrain. Sometimes abbreviated to mesen. See Brain.
MESENCHYMA
Mes*en"chy*ma, n. Etym: [NL., fr. Gr. -enchyma, as in E. parenchyma.]
(Biol.)
Defn: The part of the mesoblast which gives rise to the connective tissues and blood.
MESENTERIC
Mes`en*ter"ic, a. Etym: [Cf. F. mésentérique.] (Anat.)
Defn: Pertaining to a mesentery; mesaraic.
MESENTERON
Mes*en"te*ron, n. Etym: [NL. See Meso-, and Enteron.] (Anat.)
Defn: All that part of the alimentary canal which is developed from the primitive enteron and is lined with hypoblast. It is distinguished from the stomod, a part at the anterior end of the canal, including the cavity of the mouth, and the proctod, a part at the posterior end, which are formed by invagination and are lined with epiblast.
MESENTERY
Mes"en*ter*y, n. Etym: [Gr. mésentère.]