Phosphoroscope :: Phosphoroscope (n.) An apparatus for observing the phosphorescence produced in different bodies by the action of light, and for measuring its duration..

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.

Phosphorus :: 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

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

Phosphoryl :: Phosphoryl (n.) The radical PO, regarded as the typical nucleus of certain compounds..

Pyrophosphoric :: Pyrophosphoric (a.) Pertaining to, or designating, an acid, H4P2O7, which is obtained as a white crystalline substance. Its salts are obtained by heating the phosphates..

Sulphophosphoric :: Sulphophosphite (n.) A salt of sulphophosphorous acid.

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

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