SODIUM n.
A common metallic element of the alkali group, in nature always occuring combined, as in common salt, in albite, etc. It is isolated as a soft, waxy, white, unstable metal, so readily oxidized that it combines violently with water, and to be preserved must be kept under petroleum or some similar liquid. Sodium is used…
SOLDER n. 3 definitions
A metal or metallic alloy used when melted for uniting adjacent metallic edges or surfaces; a metallic coment. Hence, anything which unites or cements. Hard solder, a solder which fuses only at a red heat, as one composed of zinc and copper, or silver and copper, etc. -- Soft solder, a solder fusible at comparatively…
SOLDIER n. 7 definitions
rous flies of the genus Stratyomys and allied genera. They are often bright green, with a metallic luster, and are ornamented on the sides of the back with markings of yellow, like epaulets or shoulder straps. -- Soldier moth (Zoöl.), a large geometrid moth (Euschema militaris), having the wings bright yellow with blu…
SPAR n. 11 definitions
An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in the case of the gangue minerals of a metalliferous vein. Blue spar, Cube spar, etc. See under Blue, Cube, etc.
SPECIES n. 8 definitions
Coin, or coined silver, gold, ot other metal, used as a circulating medium; specie. [Obs.] There was, in the splendor of the Roman empire, a less quantity of current species in Europe than there is now. Arbuthnot.
SPHEROIDAL a.
s.), the state of a liquid, as water, when, on being thrown on a surface of highly heated metal, it rolls about in spheroidal drops or masses, at a temperature several degrees below ebullition, and without actual contact with the heated surface, -- a phenomenon due to the repulsive force of heat, the intervention of a…