Mesonephros
(||Mes`o*neph"ros) n. [NL., fr. Gr. me`sos middle + nefro`s kidney.] (Anat.) The middle one of the three pairs of embryonic renal organs developed in most vertebrates; the Wolffian body.

Mesonotum
(||Mes`o*no"tum) n. [NL., fr. Gr. me`sos middle + nw^ton the back.] (Zoöl.) The dorsal portion of the mesothorax of insects.

Mesophlœum
(||Mes`o*phlœ"um) n. [NL., fr. Gr. me`sos middle + floio`s bark.] (Bot.) The middle bark of a tree; the green layer of bark, usually soon covered by the outer or corky layer, and obliterated.

Mesophryon
(||Me*soph"ry*on) n. [NL., from Gr. meso`fryon.] (Anat.) See Glabella.

Mesophyllum
(||Mes`o*phyl"lum) n. [NL., fr. Gr. me`sos middle + fy`llon leaf.] (Bot.) The parenchyma of a leaf between the skin of the two surfaces. Gray.

Mesoplast
(Mes"o*plast) n. [Meso- + -plast.] (Biol.) The nucleus of a cell; mesoblast. Agassiz.

Mesopodial
(Mes`o*po"di*al) a. (Anat.) Of or pertaining to the mesopodialia or to the parts of the limbs to which they belong.

Mesopodiale
(||Mes`o*po`di*a"le) n.; pl. Mesopodialia [NL., fr. Gr. me`sos middle + dim. of poy`s, podo`s, foot.] (Anat.) One of the bones of either the carpus or tarsus.

Mesopodium
(||Mes`o*po"di*um) n. [NL. See Mesopodiale.] (Zoöl.) The middle portion of the foot in the Gastropoda and Pteropoda.

Mesopterygium
(||Me*sop`te*ryg"i*um) n. [NL., fr. Gr. me`sos middle + a fin.] (Anat.) The middle one of the three principal basal cartilages in the fins of fishes.||Me*sop`ter*yg"i*al a.

Mesorchium
(||Me*sor"chi*um) n. [NL., fr. Gr. me`sos middle + a testicle.] (Anat.) The fold of peritoneum which attaches the testis to the dorsal wall of the body cavity or scrotal sac.

Mesorectum
(||Mes`o*rec"tum) n. [Meso- + rectum.] (Anat.) The fold of peritoneum, or mesentery, attached to the rectum.Mes`o*rec"tal a.

Mesorhine
(Mes"o*rhine) a. [Meso- + Gr. the nose.] (Anat.) Having the nose of medium width; between leptorhine and platyrhine.

Mesosauria
(||Mes`o*sau"ri*a) n. Same as Mosasauria.

Mesoscapula
(||Mes`o*scap"u*la) n. [Meso- + scapula.] (Anat.) A process from the middle of the scapula in some animals; the spine of the scapula.

Mesoscapular
(Mes`o*scap"u*lar) a. (Anat.) Of or pertaining to the mesoscapula.

Mesoscutum
(||Mes`o*scu"tum) n. [Meso- + scutum.] (Zoöl.) The scutum or dorsal plate of the middle thoracic segment of an insect. See Illust. of Butterfly.

Mesoseme
(Mes"o*seme) a. [Meso- + Gr. sign, mark; cf. F. mésosème.] (Anat.) Having a medium orbital index; having orbits neither broad nor narrow; between megaseme and microseme.

Mesosiderite
(Mes`o*sid"er*ite) n. [Meso- + siderite.] (Min.) See the Note under Meteorite.

Mesosperm
(Mes"o*sperm) n. [Meso- + Gr. seed: cf. F. mésosperme.] (Bot.) A membrane of a seed. See Secundine.

Mesostate
(Mes"o*state) n. [Meso- + Gr. to make to stand.] (Physiol.) A product of metabolic action.


  By PanEris using Melati.

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