SILVERING n.
The art or process of covering metals, wood, paper, glass, etc., with a thin film of metallic silver, or a substance resembling silver; also, the firm do laid on; as, the silvering of a glass speculum.
SKATE n.
A metallic runner with a frame shaped to fit the sole of a shoe, -- made to be fastened under the foot, and used for moving rapidly on ice. Batavia rushes forth; and as they sweep, On sounding skates, a thousand different ways, In circling poise, swift as the winds, along, The then gay land is maddended all to joy. Tho…
SLIDING a.
distinguished from rolling friction. -- Sliding gunter (Naut.), a topmast arranged with metallic fittings so as to be hoisted and lowered by means of halyards. -- Sliding keel (Naut), a movable keel, similar to a centeboard. -- Sliding pair. (Mech.) See the Note under Pair, n., 7. -- Sliding rule. Same as Slide ru…
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. 2 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.
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.
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.
SPONGE n.
a kind of sweet cake which is light and spongy. -- Sponge lead, or Spongy lead (Chem.), metallic lead brought to a spongy form by reduction of lead salts, or by compressing finely divided lead; -- used in secondary batteries and otherwise. -- Sponge tree (Bot.), a tropical leguminous tree (Acacia Farnesiana), with d…
STARLING n.
genera. The European starling (Sturnus vulgaris) is dark brown or greenish black, with a metallic gloss, and spotted with yellowish white. It is a sociable bird, and builds about houses, old towers, etc. Called also stare, and starred. The pied starling of India is Sternopastor contra.