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Colchicine :: Colchicine (n.) A powerful vegetable alkaloid, C17H19NO5, extracted from the Colchicum autumnale, or meadow saffron, as a white or yellowish amorphous powder, with a harsh, bitter taste; -- called also colchicia..

Vanadium :: Vanadium (n.) A rare element of the nitrogen-phosphorus group, found combined, in vanadates, in certain minerals, and reduced as an infusible, grayish-white metallic powder. It is intermediate between the metals and the non-metals, having both basic and acid properties. Symbol V (or Vd, rarely). Atomic weight 51.2..

Venturine :: Venturine (n.) Gold powder for covering varnished surfaces.

Prove :: Prove (v. t.) To try or to ascertain by an experiment, or by a test or standard; to test; as, to prove the strength of gunpowder or of ordnance; to prove the contents of a vessel by a standard measure..

Reduce :: Reduce (n.) To bring to a certain state or condition by grinding, pounding, kneading, rubbing, etc.; as, to reduce a substance to powder, or to a pasty mass; to reduce fruit, wood, or paper rags, to pulp..

Menispermine :: Menispermine (n.) An alkaloid distinct from picrotoxin and obtained from the cocculus indicus (the fruit of Anamirta Cocculus, formerly Menispermum Cocculus) as a white, crystalline, tasteless powder; -- called also menispermina..

Xanthinine :: Xanthinine (n.) A complex nitrogenous substance related to urea and uric acid, produced as a white powder; -- so called because it forms yellow salts, and because its solution forms a blue fluorescence like quinine..

Disintegrable :: Disintegrable (a.) Capable of being disintegrated, or reduced to fragments or powder..

Streak :: Streak (n.) The fine powder or mark yielded by a mineral when scratched or rubbed against a harder surface, the color of which is sometimes a distinguishing character..

Powder :: Powder (v. i.) To use powder on the hair or skin; as, she paints and powders..

Wharp :: Wharp (n.) A kind of fine sand from the banks of the Trent, used as a polishing powder..

Porporino :: Porporino (n.) A composition of quicksilver, tin, and sulphur, forming a yellow powder, sometimes used by mediaeval artists, for the sake of economy, instead of gold..

Tantalum :: Tantalum (n.) A rare nonmetallic element found in certain minerals, as tantalite, samarskite, and fergusonite, and isolated as a dark powder which becomes steel-gray by burnishing. Symbol Ta. Atomic weight 182.0. Formerly called also tantalium..

Pounce :: Pounce (n.) A fine powder, as of sandarac, or cuttlefish bone, -- formerly used to prevent ink from spreading on manuscript..

Explode :: Explode (v. i.) To burst with force and a loud report; to detonate, as a shell filled with powder or the like material, or as a boiler from too great pressure of steam..

Aigremore :: Aigremore (n.) Charcoal prepared for making powder.

Glyoxal :: Glyoxal (n.) A white, amorphous, deliquescent powder, (CO.H)2, obtained by the partial oxidation of glycol. It is a double aldehyde, between glycol and oxalic acid..

Powdery :: Powdery (a.) Resembling powder; consisting of powder.

Thorium :: Thorium (n.) A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc., and isolated as an infusible gray metallic powder which burns in the air and forms thoria; -- formerly called also thorinum. Symbol Th. Atomic weight 232.0..

Insecticide :: Insecticide (n.) An agent or preparation for destroying insects; an insect powder.

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