Defn: The mesial plane dividing the body of an animal into similar right and left halves. The line in which it meets the dorsal surface has been called the dorsimeson, and the corresponding ventral edge the ventrimeson. B. G. Wilder.
MESONASAL
Mes`o*na"sal, a. Etym: [Meso- + nasal.] (Anat.)
Defn: Of or pertaining to the middle portion of the nasal region.
MESONEPHRIC
Mes`o*neph"ric, a. (Anat.)
Defn: Of or pertaining to the mesonephros; as, the mesonephric, or
Wolffian, duct.
MESONEPHROS
Mes`o*neph"ros, n. Etym: [NL., fr. Gr. (Anat.)
Defn: The middle one of the three pairs of embryonic renal organs developed in most vertebrates; the Wolffian body.
MESONOTUM
Mes`o*no"tum, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: The dorsal portion of the mesothorax of insects.
MESOPHLOEUM
Mes`o*phloe"um, n. Etym: [NL., fr. Gr. (Bot.)