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An instrument for determining the strength of spirits, with a scale graduated so as to indicate the percentage of pure alcohol, either by weight or volume. It is usually a form of hydrometer with a special scale.

The process or method of ascertaining the proportion of pure alcohol which spirituous liquors contain.

Of or pertaining to the Koran.

lioides of Brazil, used as a remedy for consumption; of Byrsonima crassifolia, used in tanning; of Alchornea latifolia, used medicinally; or of Quercus ilex, the cork tree.

A recessed portion of a room, or a small room opening into a larger one; especially, a recess to contain a bed; a lateral recess in a library.

Of or pertaining to the Alcyonaria.

Like or pertaining to the Alcyonaria. -- n.

Of or pertaining to aldehyde; as, aldehydic acid. Miller.

Pertaining to, or like, an alderman.

n alarm from a real or threatened attack; a sudden attack; also, a bugle sound to give warning. "We have had an alert." Farrow. On the alert, on the lookout or watch against attack or danger; ready to act.

An instrument for determining the expansive properties, or quality, of gluten in flour. Knight.

Of or pertaining to a chain of islands between Alaska and Kamtchatka; also, designating these islands.

Of or pertaining to Alexandria in Egypt; as, the Alexandrian library.

Pertaining to, or like, algæ.

ds and husks of the legumes of a South American tree (Inga Marthæ). It is valuable for tanning leather, and as a dye.

Of or pertaining to algebra; containing an operation of algebra, or deduced from such operation; as, algebraic characters; algebraical writings. Algebraic curve, a curve such that the equation which expresses the relation between the coördinates of its points involves only the ordinary operations of algebra; -- opposed…

Of or pertaining to Algeria. -- n.

Of or pertaining to Algiers or Algeria.

Of or pertaining to algology; as, algological specimens.

(Geol.) Pertaining to or designating a period or era recognized by the United States Geological Survey and some other authorities, between the Archæan and the Paleozoic, from both of which it is generally separated in the record by unconformities. Algonkian rocks are both sedimentary and igneous. Although fossils are…