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The glandular organ in which the material for the web of spiders is secreted.

The department of zoölogy which treats of spiders and other Arachnida.

A traffic in bills of exchange (see Arbitration of Exchange); also, a traffic in stocks which bear differing values at the same time in different markets.

(Math.), a quantity of function that is introduced into the solution of a problem, and to which any value or form may at will be given, so that the solution may be made to meet special requirements. -- Arbitrary quantity (Math.), one to which any value can be assigned at pleasure.

A place in which a collection of rare trees and shrubs is cultivated for scientific or educational purposes.

A series of arches with the columns or piers which support them, the spandrels above, and other necessary appurtenances; sometimes open, serving as an entrance or to give light; sometimes closed at the back (as in the cut) and forming a decorative feature.

The jurisdiction or office of an archbishop; the see or province over which archbishop exercises archiepiscopal authority.

The original pattern or model of a work; or the model from which a thing is made or formed. The House of Commons, the archetype of all the representative assemblies which now meet. Macaulay. Types and shadows of that glorious archetype that was to come into the world. South.

The vital principle or force which (according to the Paracelsians) presides over the growth and continuation of living beings; the anima mundi or plastic power of the old philosophers. [Obs.] Johnson.

That form of episcopacy in which the chief power is in the hands of archbishops.

A violet dye obtained from several species of lichen (Roccella tinctoria, etc.), which grow on maritime rocks in the Canary and Cape Verd Islands, etc. Tomlinson.

construction; constructive. "Architectonic wisdom." Boyle. These architectonic functions which we had hitherto thought belonged. J. C. Shairp.

The lower division of an entablature, or that part which rests immediately on the column, esp. in classical architecture. See Column.

The place in which public records or historic documents are kept. Our words . . . . become records in God's court, and are laid up in his archives as witnesses. Gov. of Tongue.

More commonly, the molding or other ornaments with which the wall face of the voussoirs of an arch is charged.

The substance from which attraction spheres develop in mitotic cell division, and of which they consist.

Of or pertaining to an arc. Arcual measure of an angle (Math.), that in which the unit angle has its measuring arc equal to the radius of the circle.

mination of many English words; as, coward, reynard, drunkard, mostly from the French, in which language this ending is of German origin, being orig. the same word as English hard. It usually has the sense of one who has to a high or excessive degree the quality expressed by the root; as, braggart, sluggard.…

A widely used system of electric night signals in which a series of double electric lamps (white and red) is arranged vertically on a mast, and operated from a keyboard below.

The unit of superficial measure, being a square of which each side is ten meters in length; 100 square meters, or about 119.6 square yards.