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An apparatus for measuring the velocity imparted by gunpowder.

An organic base, in the form of a white powder, obtained from Aconitum lycoctonum. Eng. Cyc.

The poisonous herb aconite; also, an extract from it. Strong As aconitum or rash gunpowder. Shak.

Charcoal prepared for making powder.

A grayish green antiseptic powder, consisting of a basic iodide and gallate of bismuth, sometimes used in place of iodoform. [A Trademark]

An impalpable powder. [Obs.]

The act of reducing a substance to a fine or impalpable powder. [Obs.] Johnson.

To reduce to a fine powder. [Obs.] Johnson.

A term used for the Powder of Algaroth, a white powder which is a compound of trichloride and trioxide of antimony. It was formerly used in medicine as an emetic, purgative, and diaphoretic.

, containing an unusual amount of soluble mineral salts which effloresce in the form of a powder or crust (usually white) in dry weather following rains or irrigation. The basis of these salts is mainly soda with a smaller amount of potash, and usually a little lime and magnesia. Two main classes of alkali are commonl…

An explosive consisting of a mixture of powdered aluminium and nitrate of ammonium.

Articles used in charging firearms and ordnance of all kinds; as powder, balls, shot, shells, percussion caps, rockets, etc.

A preparation or medicine containing antimony. Antimonial powder, a consisting of one part oxide of antimony and two parts phosphate of calcium; -- also called James's powder.

Goa powder.

Pertaining to, consisting of, or containing, arsenic; as, arsenious powder or glass.

A drawing paper of large size. See under Paper, n. Atlas powder, a nitroglycerin blasting compound of pasty consistency and great explosive power.

A fresh-water sponge (Spongilla), common in the north of Europe, the powder of which is used to take away the livid marks of bruises.

The quantity baked at once; a batch; as, a baking of bread. Baking powder, a substitute for yeast, usually consisting of an acid, a carbonate, and a little farinaceous matter.

discharged from a firearm; as, a cannon ball; a rifball; -- often used collectively; as, powder and ball. Spherical balls for the smaller firearms are commonly called bullets.

A smokeless powder containing equal parts of soluble nitrocellulose and nitroglycerin.