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A variety of glass, used in ornament, to cover a surface, as of metal or pottery, and admitting of after decoration in color, or used itself for inlaying or application in varied colors.

An iron-black mineral of metallic luster, occurring in small orthorhombic crystals, also massive. It contains sulphur, arsenic, copper, and often silver.

o remain firm under; to sustain; to undergo; to support without breaking or yielding; as, metals endure a certain degree of heat without melting; to endure wind and weather. Both were of shining steel, and wrought so pure, As might the strokes of two such arms endure. Dryden.

To form or represent by means of incisions upon wood, stone, metal, or the like; as, to engrave an inscription.

One who engraves; a person whose business it is to produce engraved work, especially on metal or wood.

lines, and the like; especially, the art of producing such lines, etc., in the surface of metal plates or blocks of wood. Engraving is used for the decoration of the surface itself; also, for producing an original, from which a pattern or design may be printed on paper.

A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Symbol Er. Atomic weight 165.9. Its salts are rose-colored and give characteristic spectra. Its sesquioxide is called erbia.

A name originally given (from its red acid) to the metal vanadium. [R.]

A thin metal plate or shield to protect wood, or for ornament, as the shield around a keyhole.

A defense for the shoulder, composed of flexible overlapping plates of metal, used in the 15th century; -- the origin of the modern epaulette. Fairholt.

To test the value and purity of (metals); to assay. See Assay. [Obs.] Locke.

To subject to etching; to draw upon and bite with acid, as a plate of metal. I was etching a plate at the beginning of 1875. Hamerton.

ctice of engraving by means of acid which eats away lines or surfaces left unprotected in metal, glass, or the like. See Etch, v. t.

A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.

A metallic element of the rare-earth group, discovered spectroscopically by Demarcay in 1896. Symbol, Eu; at. wt., 152.0.

A brownish black mineral with a metallic luster, found in Norway. It contains niobium, titanium, yttrium, and uranium, with some other metals.

opened, spread apart, dilated, distended, or enlarged; as, flowers expand in the spring; metals expand by heat; the heart expands with joy. Dryden.

se; extend surface; as the expansion of a sheet or of a lake; the expansion was formed of metal. The starred expansion of the skies. Beattie.

To enlarge, as a surface or volume; to expand; to spread; to amplify; as, to extend metal plates by hammering or rolling them.

sible; the capacity of being extended; as, the extensibility of a fiber, or of a plate of metal.