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A drawing instrument, combining a protractor and scale.

ompass. Dial bird (Zoöl.), an Indian bird (Copsychus saularius), allied to the European robin. The name is also given to other related species. -- Dial lock, a lock provided with one or more plates having numbers or letters upon them. These plates must be adjusted in a certain determined way before the lock can be ope…

uced by a single object lens of crown glass is corrected by a smaller concave lens, or combination of lenses, of high dispersive power, placed at a distance in the narrower part of the converging cone of rays, usually near the middle of the tube.

A prefix or combining form of Diamine.

A combining form (also used adjectively), meaning pertaining to, or derived from, a series of compounds containing a radical of two nitrogen atoms, united usually to an aromatic radical; as, diazo- benzene, C6H5.N2.OH.

The act of dictating; the act or practice of prescribing; also that which is dictated. It affords security against the dictation of laws. Paley.

A compound of a binary type containing two cyanogen groups or radicals; -- called also bicyanide.

fferential motion. -- Differential motion, a mechanism in which a simple differential combination produces such a change of motion or force as would, with ordinary compound arrangements, require a considerable train of parts. It is used for overcoming great resistance or producing very slow or very rapid motion. -- D…

The act of distinguishing or describing a thing, by giving its different, or specific difference; exact definition or determination.

To point out as with the finger. [R.] Robinson (Eudoxa).

Browne. computers to convert (information, a signal, an image) into a form expressible in binary notation

Two signs or characters combined to express a single articulated sound; as ea in head, or th in bath.

A compound of a binary type containing two atoms of iodine; -- called also biniodide.

and Bouton, in which a painting is seen from a distance through a large opening. By a combination of transparent and opaque painting, and of transmitted and reflected light, and by contrivances such as screens and shutters, much diversity of scenic effect is produced.

An oxide containing two atoms of oxygen in each molecule; binoxide.

made by repeatedly dipping a wick in melted tallow. -- To dip snuff, to take snuff by rubbing it on the gums and teeth. [Southern U. S.] -- To dip the colors (Naut.), to lower the colors and return them to place; -- a form of naval salute.

A form of micrococcus in which cocci are united in a binary manner. See Micrococcus.

The practice of taking snuff by rubbing the teeth or gums with a stick or brush dipped in snuff. [U.S.] Dipping needle, a magnetic needle suspended at its center of gravity, and moving freely in a vertical plane, so as to indicate on a graduated circle the magnetic dip or inclination.

An alteration in the state of the body or of some of its organs, interrupting or disturbing the performance of the vital functions, and causing or threatening pain and weakness; malady; affection; illness; sickness; disorder; -- applied figuratively to the mind, to the moral character and habits, to institutions, the s…

A mingling of discordant sounds; an inharmonious combination of sounds; discord. Filled the air with barbarous dissonance. Milton.