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Inactive; inert; not showing strong affinity; as, red phosphorus is comparatively passive.

An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5.

An inert amorphous white powder, PN2H, obtained by passing ammonia over heated phosphorus. [Spelt also phosphame.] -- Phos"pham"ic, a.

A salt of phosphoric acid.

Pertaining to, or containing, phosphorus, phosphoric acid, or phosphates; as, phosphatic nodules. Phosphatic diathesis (Med.), a habit of body which leads to the undue excretion of phosphates with the urine.

A binary compound of phosphorus.

A salt of phosphorous acid.

Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical, and analogous to the sulphonic acid.

Impregnated, or combined, with phosphorus. [Obsoles.] [Written also phosphuretted.] Phosphureted hydrogen. (Chem.) See Phosphine.

A genus including certain comma-shaped marine bacteria which emit bluish or greenish phosphorescence. Also, any microörganism of this group.

A nitrogenous phosphorized principle found in brain tissue. By decomposition it yields neurine, fatty acids, and other bodies.

hem.), used to imply an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc.

Pertaining to, or designating, an acid of antimony analogous to pyrophosphoric acid.

Pertaining to or designating, an acid of arsenic analogous to pyrophosphoric acid.

Any one of several substances or mixtures which phosphoresce or ignite spontaneously on exposure to air, as a heated mixture of alum, potash, and charcoal, or a mixture of charcoal and finely divided lead.

A salt of pyrophosphoric acid.

ders, sometimes two or three feet long, which swim at the surface of the sea and are very phosphorescent.

Pertaining to, or designating, an acid of vanadium, analogous to pyrophosphoric acid.

To change back, as from a soluble to an insoluble state or the reverse; thus, phosphoric acid in certain fertilizers reverts.

cause to become inert by chemical combination with all that it can hold; as, to saturate phosphorus with chlorine.