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A white fibrous mineral frequently found on the walls of mines and quarries, chiefly hydrous sulphate of alumina; -- also called feather alum, and hair salt.

A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone. Oriental amethyst, the violet-blue variety of transparent crystallized corundum or sapphire.

A square of white linen worn at first on the head, but now about the neck and shoulders, by priests of the Roman Catholic Church while saying Mass.

ices were practiced among them. Hume. Divide that gold amongst you. Marlowe. Whether they quarreled among themselves, or with their neighbors. Addison.

Ambiguous; doubtful. [Obs.] Never was there such an amphibolous quarrel -- both parties declaring themselves for the king. Howell.

es, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.

h degree which have certain peculiar relations to circles; -- sometimes called bicircular quartics. -- Anallagmatic surfaces, a certain class of surfaces of the fourth degree.

which thy fathers have set. Prov. xxii. 28. An ancient man, strangely habited, asked for quarters. Scott.

A silicate of aluminium, occurring usually in thick rhombic prisms, nearly square, of a grayish or pale reddish tint. It was first discovered in Andalusia, Spain.

med by a right line falling on another perpendicularly, or an angle of 90º (measured by a quarter circle). -- Solid angle, the figure formed by the meeting of three or more plane angles at one point. -- Spherical angle, one made by the meeting of two arcs of great circles, which mutually cut one another on the surfac…

A genus of extinct quadrupeds of the order Ungulata, whose were first found in the gypsum quarries near Paris; characterized by the shortness and feebleness of their canine teeth (whence the name).

An antiquary; a collector of antiques. [R.] Pinkerton.

A mineral relating to the zeolites, usually occurring in square prisms or octahedrons with pearly luster on the cleavage surface. It is a hydrous silicate of calcium and potassium.

surable only in power, as between sq. root2 and 1, or between the diagonal and side of a square.

A reliquary, or case in which the relics of saints were kept.

ion. The arbitrament of time. Everett. Gladly at this moment would MacIvor have put their quarrel to personal arbitrament. Sir W. Scott.

One versed in archæology; an antiquary. Wright.

Am antiquary.

architectural member, above and on both sides of a door or other opening, especially if square in form.

rounding the curved opening of an arch, corresponding to the architrave in the case of a square opening.