Defn: One of the bones of the tarsus. See 2d Cuneiform.

MESODERM Mes"o*derm, n. Etym: [Meso- + Gr. (Biol.) (a) The layer of the blastoderm, between the ectoderm and endoderm; mesoblast. See Illust. of Blastoderm and Ectoderm. (b) The middle body layer in some invertebrates. (c) The middle layer of tissue in some vegetable structures.

MESODERMAL
Mes`o*der"mal, a. (Biol.)

Defn: Pertaining to, or derived from, the mesoderm; as, mesodermal tissues.

MESODERMIC
Mes`o*der"mic, a.

Defn: Same as Mesodermal.

MESODONT
Mes"o*dont, a. Etym: [Meso- + Gr. (Anat.)

Defn: Having teeth of moderate size.

MESOGASTER
Mes`o*gas"ter, n. Etym: [NL., fr. Gr. (Anat.)

Defn: The fold of peritoneum connecting the stomach with the dorsal wall of the abdominal cavity; the mesogastrium.