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A compound radical, NH2, not yet obtained in a separate state, which may be regarded as ammonia from the molecule of which one of its hydrogen atoms has been removed; -- called also the amido group, and in composition represented by the form amido.

A gaseous compound of hydrogen and nitrogen, NH3, with a pungent smell and taste: -- often called volatile alkali, and spirits of hartshorn.

A compound radical, NH4, having the chemical relations of a strongly basic element like the alkali metals.

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

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.

The separation of a compound substance, by chemical processes, into its constituents, with a view to ascertain either (a) what elements it contains, or (b) how much of each element is present. The former is called qualitative, and the latter quantitative analysis.

Compound interest. [R.] Bouvier.

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.

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One of a class of compounds which may be regarded as amides in which more or less of the hydrogen has been replaced by phenyl.

The inflorescence of a compound flower in which many florets are gathered into a involucrate head.

Anything to prevent the effects of friction, esp. a compound lubricant for machinery, etc., often consisting of plumbago, with some greasy material; antifriction grease.

A compound of antimonic acid with a base or basic radical. [Written also antimoniate.]

Pertaining to, or derived from, antimony; -- said of those compounds of antimony in which this element has its highest equivalence; as, antimonic acid.

Pertaining to, or derived from, antimony; -- said of those compounds of antimony in which this element has an equivalence next lower than the highest; as, antimonious acid.

A compound of antimonious acid and a base or basic radical.

A compound formerly supposed to be modification of oxygen, but now known to be hydrogen dioxide; -- so called because apparently antagonistic to ozone, converting it into ordinary oxygen.

Either entirely of partially separate, as the carpels of a compound pistil; -- opposed to syncarpous. Lindley.