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to color pyrotechnic flames red. Symbol Sr. Atomic weight 87.3. A radioactive isotope of strontium produced by certain nuclear reactions, and constituting one of the prominent harmful components of radioactive fallout from nuclear explosions; also called radiostrontium. It has a half-life of 28 years.…

Native strontium sulphate, a mineral so named from its occasional delicate blue color. It occurs crystallized, also in compact massive and fibrous forms.

k, etc., the flames of which are colored by various metallic salts, as those of antimony, strontium, barium, etc. -- Fire alarm (a) A signal given on the breaking out of a fire. (b) An apparatus for giving such an alarm. -- Fire annihilator, a machine, device, or preparation to be kept at hand for extinguishing fire…

between substances of similar composition, as between the sulphates of barium (BaSO4) and strontium (SrSO4). It is sometimes extended to include similarity of form between substances of unlike composition, which is more properly called homoeomorphism.

s (Lockyer); as protocalcium, protochromium, protocopper, protonickel, protosilicon, protostrontium, prototitanium, protovanadium. -- Pro`to*me*tal"ic (#), a.

ing lime in appearance, and baryta in many of its properties. It is an oxide of the metal strontium.

Strontium carbonate, a mineral of a white, greenish, or yellowish color, usually occurring in fibrous massive forms, but sometimes in prismatic crystals.

Of or pertaining to strontium; containing, or designating the compounds of, strontium.