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atic series, metameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also paraphthalic acid. Cf. Phthalic.

mplex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.

t is produced artificially, by the chemical dehydration of thionine, as a brown amorphous powder.

erals, 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.

alence as contrasted with the titanous compounds. Titanic acid (Chem.), a white amorphous powder, Ti.(OH)4, obtained by decomposing certain titanates; -- called also normal titanic acid. By extension, any one of a series of derived acids, called also metatitanic acid, polytitanic acid, etc. -- Titanic iron ore. (Min.)…

rals manaccanite, rutile, sphene, etc., and isolated as an infusible iron- gray amorphous powder, having a metallic luster. It burns when heated in the air. Symbol Ti. Atomic weight 48.1.

e as Dogtooth, n., 2.Tooth paste, a paste for cleaning the teeth; a dentifrice. -- Tooth powder, a powder for cleaning the teeth; a dentifrice. -- Tooth rash. (Med.) See Red-gum, 1. -- To show the teeth, to threaten. "When the Law shows her teeth, but dares not bite." Young. -- To the teeth, in open opposition; dir…

or near the water line through which a torpedo is fired, usually by a small charge of gunpowder. On torpedo vessels the tubes are on deck and usually in broadside, on larger vessels usually submerged in broadside and fitted with a movable shield which is pushed out from the vessel's side to protect the torpedo until c…

Paper steeped in saltpeter, which burns slowly, and is used as a match for firing gunpowder, and the like.

The vent of a cannot or other firearm, by which fire is communicateed to the powder of the charge.

A small wig, or a toppiece of a wig. Her powdered hair is turned backward over a toupee. G. Eliot.

A line of gunpowder laid to lead fire to a charge, mine, or the like.

To rub or grind to a very fine or impalpable powder; to pulverize and comminute thoroughly.

The act of triturating, or reducing to a fine or impalpable powder by grinding, rubbing, bruising, etc. Paley.

A heavy yellow powder, Hg3O2SO4, which consists of a basic mercuric sulphate; -- called also turpeth mineral.

A blue pigment formerly obtained by powdering lapis lazuli, but now produced in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides made in the fusion. Also used adjectively. Green ultramarine, a green pigment obtained as a first product…

us plants; as, umbellic acid. Umbellic acid. (Chem.) (a) Anisic acid. [Obs.] (b) A yellow powder obtained from umbelliferone.

d, 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. Sumbol V (or Vd, rarely). Atomic weight 51.2.

small box, usually jeweled or of precious metal and worn on a chain, containing a mirror, powder puff, and other small toilet articles for a woman.

Gold powder for covering varnished surfaces.