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The fold of peritoneum which attaches the testis to the dorsal wall of the body cavity or scrotal sac.

The fold of peritoneum, or mesentery, attached to the rectum. -- Mes`o*rec"tal, a.

Having the nose of medium width; between leptorhine and platyrhine.

Same as Mosasauria.

A process from the middle of the scapula in some animals; the spine of the scapula.

Of or pertaining to the mesoscapula.

The scutum or dorsal plate of the middle thoracic segment of an insect. See Illust. of Butterfly.

Having a medium orbital index; having orbits neither broad nor narrow; between megaseme and microseme.

See the Note under Meteorite.

A membrane of a seed. See Secundine.

A product of metabolic action.

Of or pertaining to the mesosternum.

The ventral piece of the middle segment of the thorax in insects.

Pertaining to, or designating, an acid called also inactive tartaric acid.

The middle layer of the gonophore in the Hydrozoa.

Epithelial mesoderm; a layer of cuboidal epithelium cells, formed from a portion of the mesoderm during the differetiation of the germ layers. It constitutes the boundary of the coelum.

Of or pertaining to the mesothorax.

The middle segment of the thorax in insects. See Illust. of Coleoptera.

A radioactive product intermediate between thorium and radiothorium, with a period of 5.5 years.

Having the middle of the body surrounded by bands of cilia; -- said of the larvæ of certain marine annelids.