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A small piece of marble, glass, earthenware, or the like, having a square, or nearly square, face, used by the ancients for mosaic, as for making pavements, for ornamenting walls, and like purposes; also, a similar piece of ivory, bone, wood, etc., used as a ticket of admission to theaters, or as a certificate for succ…

mitted as a mode of proving handwriting. -- Test tube. (Chem.) (a) A simple tube of thin glass, closed at one end, for heating solutions and for performing ordinary reactions. (b) A graduated tube.

Obtaining or deserving thanks; thankworthy. [R.] Ladies, look here; this is the thankful glass That mends the looker's eyes; this is the well That washes what it shows. Herbert.

; connection; antithesis; opposition; as, they engaged hand to hand. Now we see through a glass, darkly; but then face to face. 1 Cor. xiii. 12.

ed in dressing; attire; dress; as, her toilet is perfect. [Written also toilette.] Toilet glass, a looking-glass for a toilet table or for a dressing room. -- Toilet service, Toilet set, earthenware, glass, and other utensils for a dressing room. -- Toilet table, a dressing table; a toilet. See def. 2 above. -- To s…

as in the barometer, is due to atmospheric pressure. See Barometer. Torricellian tube, a glass tube thirty or more inches in length, open at the lower end and hermetically sealed at the upper, such as is used in the barometer. -- Torricellian vacuum (Physics), a vacuum produced by filling with a fluid, as mercury, a…

f no real value; an article of trade of little value; a trifle. They exchange for knives, glasses, and such toys, great abundance of gold and pearl. Abr. Abbot.

To suffer to pass through; as, glass transmits light; metals transmit, or conduct, electricity.

That which is transparent; especially, a picture painted on thin cloth or glass, or impressed on porcelain, or the like, to be viewed by natural or artificial light, which shines through it. Fairholt.

can be distinctly seen through; pervious to light; diaphanous; pellucid; as, transparent glass; a transparent diamond; -- opposed to Ant: opaque. "Transparent elemental air." Milton.

thrown into the air by striking the other end. Also, a machine for throwing into the air glass balls, clay pigeons, etc., to be shot at.

Shooting at pigeons liberated, or glass balls or clay pigeons sprung into the air, from a trap. -- Trap shooter.

A flat, broad vessel on which dishes, glasses, etc., are carried; a waiter; a salver.

A drinking glass, without a foot or stem; -- so called because originally it had a pointed or convex base, and could not be set down with any liquor in it, thus compelling the drinker to finish his measure.

in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides made in the fusion. Also used adjectively. Green ultramarine, a green pigment obtained as a first product in the manufacture of ultramarine, into which it is changed by subsequent tr…

To strip of glass; to remove the glazing, or glass, from, as a window.

; -- so called from the peculiar yellowish green fluorescence (resembling that of uranium glass) of its solutions. See Fluorescein.

hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting. Symbol U. Atomic weight 239.

shortens the process. -- Vacuum pump. Same as Pulsometer, 1. -- Vacuum tube (Phys.), a glass tube provided with platinum electrodes and exhausted, for the passage of the electrical discharge; a Geissler tube. -- Vacuum valve, a safety valve opening inward to admit air to a vessel in which the pressure is less than…

cavity, as in the earth or other substance. "Down to the veins of earth." Milton. Let the glass of the prisms be free from veins. Sir I. Newton.