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A threaded and fluted hardened steel cutter, resembling a tap, used in a lathe for forming the teeth of screw chasers, worm wheels, etc.

A projecting cover above a hearth, forming the upper part of the fireplace, and confining the smoke to the flue.

A projecting molding over the head of an arch, forming the outermost member of the archivolt; -- called also hood mold.

The process of forming hummocks in the collision of Arctic ice. Kane.

Forming one of a hundred equal parts into which anything is divided; the tenth of a tenth.

Capable of forming a hybrid, or of being subjected to a hybridizing process; capable of producing a hybrid by union with another species or stock. Hybridizable genera are rarer than is generally supposed, even in gardens where they are so often operated upon, under circumstances most favorable to the production of hybr…

A compound formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts.

of foreign origin, who, according to the narrative of Manetho, ruled for about 500 years, forming the XVth and XVIth dynasties. It is now considered that the XVIth is merely a double of the XVth dynasty, and that the total period of the six Hyksos kings was little more than 100 years. It is supposed that they were Asia…

Hypochlorous acid (Chem.), an acid derived from chlorine, not known in a pure state, but forming various salts, called hypochlorites.

A layer of tissue beneath the epidermis in plants, and performing the physiological function of strengthening the epidermal tissue. In phanerogamous plants it is developed as collenchyma.

n used for decorating restaurants. ice show an entertainment consisting of ice skaters performing figure-skating on a sheet of ice, usually in an arena, often accompanied by music. -- Ice sludge, bay ice broken small by the wind or waves; sludge. -- Ice spar (Min.), a variety of feldspar, the crystals of which are ve…

. A suffix used in forming the names of certain sciences, systems, etc., as acoustics, mathematics, dynamics, statistics, politics, athletics.

The faculty or capacity of the mind for forming ideas; the exercise of this capacity; the act of the mind by which objects of sense are apprehended and retained as objects of thought. The whole mass of residua which have been accumulated . . . all enter now into the process of ideation. J. D. Morell.…

An expression conforming or appropriate to the peculiar structural form of a language; in extend use, an expression sanctioned by usage, having a sense peculiar to itself and not agreeing with the logical sense of its structural form; also, the phrase forms peculiar to a particular author. Some that with care true eloq…

Of or pertaining to, or conforming to, the mode of expression peculiar to a language; as, an idiomatic meaning; an idiomatic phrase. -- Id`i*o*mat"ic*al*ly, adv.

A transliteration of the four constants forming the Hebrew tetragrammaton or "incommunicable name" of the Supreme Being, which in latter Jewish tradition is not pronounced save with the vowels of adonai or elohim, so that the true pronunciation is lost.

his canvas with especial reference to the juxtaposition of different colors and tints in forming a harmonious whole. Fairholt.

The act of forming an abscess; state of being inflamed; suppuration.

en antæ; -- said of a portico in classical style, where columns are set between two antæ, forming the angles of the building. See Anta.

An indigo-forming substance, found in urine, and other animal fluids, and convertible into red and blue indigo (urrhodin and uroglaucin). Chemically, it is indoxyl sulphate of potash, C8H6NSO4K, and is derived from the indol formed in the alimentary canal. Called also uroxanthin.