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Having half of the similar parts of a crystals, instead of all; consisting of half the planes which full symmetry would require, as when a cube has planes only on half of its eight solid angles, or one plane out of a pair on each of its edges; or as in the case of a tetrahedron, which is hemihedral to an octahedron, it…

The property of crystallizing hemihedrally.

A solid hemihedrally derived. The tetrahedron is a hemihedron.

Presenting hemihedral forms, in which half the sectants have the full number of planes.

Having half as many (three) carboxyl radicals as mellitic acid; -- said of an organic acid.

Those insects which have an incomplete metamorphosis.

Having an incomplete metamorphosis, the larvæ differing from the adults chiefly in laking wings, as in the grasshoppers and cockroaches.

Having the two ends modified with unlike planes; -- said of a crystal.

A substance, in the form of reddish brown, microscopic, prismatic crystals, formed from dried blood by the action of strong acetic acid and common salt; -- called also Teichmann's crystals. Chemically, it is a hydrochloride of hematin.

A measure of half a sextary. Arbuthnot.

A wild ass found in Thibet; the kiang. Darwin.

A defect of vision in consequence of which a person sees but half of an object looked at.

Same as Monoclinic.

A product of the gastric and pancreatic digestion of albuminous matter.

A palsy that affects one side only of the body. -- Hem`i"pleg"ic, a.

Hemiplegia.

Any bird of the genus Turnix. Various species inhabit Asia, Africa, and Australia.

An insoluble, proteid substance, described by Schützenberger, formed when albumin is heated for some time with dilute sulphuric acid. It is apparently identical with antialbumid and dyspeptone.

One of the Hemiptera.

An order of hexapod insects having a jointed proboscis, including four sharp stylets (mandibles and maxillæ), for piercing. In many of the species (Heteroptera) the front wings are partially coriaceous, and different from the others.