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A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some comm…

on of two oxides, two sulphides, selenides, or tellurides, as distinguished from a haloid compound. [R.] Berzelius.

uartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.

Any of eight isomeric liquid compounds, C5H11OH; ordinarily, a mixture of two of these forming a colorless liquid with a peculiar cough-exciting odor and burning taste, the chief constituent of fusel oil. It is used as a source of amyl compounds, such as amyl acetate, amyl nitrite, etc.

A compound of the radical amyl with oxygen and a positive atom or radical.

A crystalline compound used as an antipyretic and analgesic, employed chiefly in rheumatism and neuralgia. It is a complex derivative of quinoline.

ses or of the intellect, into its constituent or original elements; an examination of the component parts of a subject, each separately, as the words which compose a sentence, the tones of a tune, or the simple propositions which enter into an argument. It is opposed to synthesis.

A verse composed of such feet.

Compound interest. [R.] Bouvier.

A series of ancestors or progenitors; lineage, or those who compose the line of natural descent.

ns of Court or of Chancery. Council of Ancients (French Hist.), one of the two assemblies composing the legislative bodies in 1795. Brande.

A prefix, or combining form, in numerous compounds, usually relating to seed or blood vessels, or to something contained in, or covered by, a vessel.

A tumor composed chiefly of dilated blood vessels.

Having an angle or angles; -- used in compounds; as, right- angled, many-angled, etc. The thrice three-angled beechnut shell. Bp. Hall.

One of a class of compounds which may be regarded as amides in which more or less of the hydrogen has been replaced by phenyl.

An electro-negative element, or the element which, in electro- chemical decompositions, is evolved at the anode; -- opposed to cation. Faraday.

Not isomeric; not made of the same components in the same proportions.

Having ankles; -- used in composition; as, well-ankled. Beau. & Fl.

ourts, or other established rules, permanent usages, and the like, which are made void by component authority. Do they mean to annul laws of inestimable value to our liberties Burke.

Furnished with, or composed of, rings; ringed; surrounded by rings of color.