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A grayish white zeolitic mineral, in tetragonal crystals. It is a hydrous silicate of alumina and baryta.

f an argument on which its conclusiveness depends; that which convinces of refutes an antagonist; a refutation.

ke a proboscis. -- Elephant's ear (Bot.), a name given to certain species of the genus Begonia, which have immense one-sided leaves. -- Elephant's foot (Bot.) (a) A South African plant (Testudinaria Elephantipes), which has a massive rootstock covered with a kind of bark cracked with deep fissures; -- called also tor…

one of numerous species of moths of which the larvæ destroy the leaves of the elm (esp. Eugonia subsignaria, called elm spanworm). -- Elm sawfly (Zoöl.), a large sawfly (Cimbex Americana). The larva, which is white with a black dorsal stripe, feeds on the leaves of the elm.

One who encounters; an opponent; an antagonist. Atterbury.

A figure having nine sides; a nonagon.

Inflammation of the epididymis, one of the common results of gonorrhea.

Having all the sides equal; as, an equilateral triangle; an equilateral polygon. Equilateral hyperbola (Geom.), one whose axes are equal. -- Equilateral shell (Zoöl.), one in which a transverse line drawn through the apex of the umbo bisects the valve, or divides it into two equal and symmetrical parts. -- Mutually e…

excursions on land; as, to escort a public functionary, or a lady; to escort a baggage wagon.

brittle gem occurring in light green, transparent crystals, affording a brilliant clinodiagonal cleavage. It is a silicate of alumina and glucina.

an exercise in the application of the rules of any study or branch of science; as, in trigonometry and grammar, the principles and rules are illustrated by examples.

To inflict agonizing pain upon; to torture; to torment greatly; to rack; as, to excruciate the heart or the body. Their thoughts, like devils, them excruciate. Drayton.

The act of inflicting agonizing pain, or the state of being thus afflicted; that which excruciates; torture. Feltham.

mit the last breath; to breathe out the life; to die; as, to expire calmly; to expire in agony.

A person employed in the express business; also, the driver of a job wagon. W. D. Howells.

kingdom. Exterior angle (Geom.), the angle included between any side of a triangle or polygon and the prolongation of the adjacent side; also, an angle included between a line crossing two parallel lines and either of the latter on the outside. -- Exterior side (Fort.), the side of the polygon upon which a front of fo…

Any moth of the genus Polypogon.

rope. In a fang, fast entangled. -- To lose the fang, said of a pump when the water has gone out; hence: To fang a pump, to supply it with the water necessary to make it operate. [Scot.]

A genus of fossil corals abundant in the Silurian and Devonian rocks, having polygonal cells with perforated walls.

A tile or flagstone cut into an hexagonal shape to produce a honeycomb pattern, as in a pavement; -- called also favas and sectila. Mollett.