English definition of Phosphorus

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Definition of phosphorus

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Phosphorus (n.) A poisonous nonmetallic element of the nitrogen group, obtained as a white, or yellowish, translucent waxy substance, having a characteristic disagreeable smell. It is very active chemically, must be preserved under water, and unites with oxygen even at ordinary temperatures, giving a faint glow, -- whence its name. It always occurs compined, usually in phosphates, as in the mineral apatite, in bones, etc. It is used in the composition on the tips of friction matches, and for man

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Phosphureted :: Phosphureted (a.) Impregnated, or combined, with phosphorus..

Phosphor-bronze :: Phosphor-bronze (n.) A variety of bronze possessing great hardness, elasticity, and toughness, obtained by melting copper with tin phosphide. It contains one or two per cent of phosphorus and from five to fifteen per cent of tin..

Nuclein :: Nuclein (n.) A constituent of the nuclei of all cells. It is a colorless amorphous substance, readily soluble in alkaline fluids and especially characterized by its comparatively large content of phosphorus. It also contains nitrogen and sulphur..

Noctiluca :: Noctiluca (n.) That which shines at night; -- a fanciful name for phosphorus.

Hypophosphorous :: Hypophosphorous (a.) Pertaining to, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; as, hypophosphorous acid..

Kerasin :: Kerasin (n.) A nitrogenous substance free from phosphorus, supposed to be present in the brain; a body closely related to cerebrin..

Cast Iron :: Cast iron () Highly carbonized iron, the direct product of the blast furnace; -- used for making castings, and for conversion into wrought iron and steel. It can not be welded or forged, is brittle, and sometimes very hard. Besides carbon, it contains sulphur, phosphorus, silica, etc..

Pentoxide :: Pentoxide (n.) An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5..

Phosphorus :: Phosphorus (n.) Hence, any substance which shines in the dark like phosphorus, as certain phosphorescent bodies..

Phosphoric :: Phosphoric (a.) Of or pertaining to phosphorus; resembling, or containing, from us; specifically, designating those compounds in which phosphorus has a higher valence as contrasted with the phosphorous compounds..

Phosphorous :: Phosphorous (a.) Of or pertaining to phosphorus; resembling or containing phosphorus; specifically, designating those compounds in which phosphorus has a lower valence as contrasted with phosphoric compounds; as, phosphorous acid, H3PO3..

Phosphorus :: Phosphorus (n.) The morning star; Phosphor.

Phosphorate :: Phosphorate (v. t.) To impregnate, or combine, with phosphorus or its compounds; as, phosphorated oil..

Metalloid :: Metalloid (n.) Now, one of several elementary substances which in the free state are unlike metals, and whose compounds possess or produce acid, rather than basic, properties; a nonmetal; as, boron, carbon, phosphorus, nitrogen, oxygen, sulphur, chlorine, bromine, etc., are metalloids..

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..

Tantalic :: Tantalic (a.) Of or pertaining to tantalum; derived from, or containing, tantalum; specifically, designating any one of a series of acids analogous to nitric acid and the polyacid compounds of phosphorus..

Phosphoresce :: Phosphoresce (v. i.) To shine as phosphorus; to be phosphorescent; to emit a phosphoric light.

Schreibersite :: Schreibersite (n.) A mineral occurring in steel-gray flexible folia. It contains iron, nickel, and phosphorus, and is found only in meteoric iron..

Phospham :: Phospham (n.) An inert amorphous white powder, PN2H, obtained by passing ammonia over heated phosphorus..

Sulphophosphorous :: Sulphophosphoric (a.) Of, pertaining to, or designating, a hypothetical sulphacid of phosphorus, analogous to phosphoric acid, and known in its salts..