Part 107

De*phase" (?), v. t. (Elec.) To put out of phase, as two parts of a single alternating current.

Depth, n. (Aëronautics) The perpendicular distance from the chord to the farthest point of an arched surface.

De*queen" (?), v. t. (Apiculture) To remove the queen from (a hive of bees).

De*re"cho (?), n. [Sp. derecho straight.] A straight wind without apparent cyclonic tendency, usually accompanied with rain and often destructive, common in the prairie regions of the United States.

||De ri`gueur" (?). [F. See 2d Rigor.] According to strictness (of etiquette, rule, or the like); obligatory; strictly required.

Der`iva"tion, n. The formation of a word from its more original or radical elements; also, a statement of the origin and history of a word.

Der"rick, n. (Mining) The pyramidal structure or tower over a deep drill hole, such as that of an oil well.

Der"vish, n. One of the fanatical followers of the Mahdi, in the Sudan.

Des"ic*ca`tor (?), n. One that desiccates; specif.: (a) (Chem., etc.) A short glass jar fitted with an air-tight cover, and containing some desiccating agent, as calcium chloride, above which is placed the material to be dried or preserved from moisture. (b) A machine or apparatus for drying fruit, milk, etc., usually by the aid of heat; an evaporator.

De*stroy"er, n. = Torpedo-boat destroyer.

De*struct"or, n. A furnace or oven for the burning or carbonizing of refuse; specif. (Sewage Disposal), a furnace (called in full refuse destructor) in which the more solid constituents of sewage are burnt. Destructors are often so constructed as to utilize refuse as fuel.

De*tail", n. (Arch. & Mach.) (a) A minor part, as, in a building, the cornice, caps of the buttresses, capitals of the columns, etc., or (called larger details) a porch, a gable with its windows, a pavilion, or an attached tower. (b) A detail drawing.

In detail, in subdivisions; part by part; item by item; circumstantially; with particularity.

De*tect"or, n. Specifically: (a) An indicator showing the depth of the water in a boiler. (b) (Elec.) A galvanometer, usually portable, for indicating the direction of a current. (c) (Elec.) Any of various devices for detecting the presence of electric waves.

De*tect"or bar. (Railroads) A bar, connected with a switch, longer than the distance between any two consecutive wheels of a train (45 to 50 feet), laid inside a rail and operated by the wheels so that the switch cannot be thrown until all the train is past the switch.

Det"o*na`tor (?), n. One that detonates; specif.: (a) An explosive whose action is practically instantaneous. (b) Something used to detonate a charge, as a detonating fuse. (c) A case containing detonating powder, the explosion of which serves as a signal, as on railroads. (d) A gun fired by a percussion cap. [Obs.]

De*vel"op*er, n. One that develops; specif.: (a) (Photog.) A chemical bath or reagent used in developing photographs. (b) (Dyeing) A reagent used to produce an ingrain color by its action upon some substance on the fiber.

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Dew"ar ves`sel (d"r). [After Sir James Dewar, British physicist.] A double-walled glass vessel for holding liquid air, etc., having the space between the walls exhausted so as to prevent conduction of heat, and sometimes having the glass silvered to prevent absorption of radiant heat; -- called also, according to the particular shape, Dewar bulb, Dewar tube, etc.

Dex"ter, n. [Prob. so named after the original breeder.] One of a breed of small hardy cattle originating from the Kerry breed of Ireland, valuable both for beef and milk. They are usually chiefly black, sometimes red, and somewhat resemble a small shorthorn in build. Called also Dexter Kerry.

Di*ab"o*lo (d*b"*l), n. An old game or sport (revived under this name) consisting in whirling on a string, fastened to two sticks, a small somewhat spool-shaped object (called the diabolo) so as to balance it on a string, toss it in the air and catch it, etc.

{ Diamond anniversary, jubilee, etc. } One celebrated upon the completion of sixty, or, according to some, seventy-five, years from the beginning of the thing commemorated.

Diamond State. Delaware; -- a nickname alluding to its small size.

||Di*as"po*ra (?), n. [Gr. &?;. See Diaspore.] Lit., "Dispersion." -- applied collectively: (a) To those Jews who, after the Exile, were scattered through the Old World, and afterwards to Jewish Christians living among heathen. Cf. James i. 1. (b) By extension, to Christians isolated from their own communion, as among the Moravians to those living, usually as missionaries, outside of the parent congregation.

Dick"ey, 1. A hat; esp., in U. S., a stiff hat or derby; in Eng., a straw hat. [Slang]

2. One of various animals; specif.: (a) A donkey. (b) Any small bird; -- called also dickey bird. [Colloq.] (c) The hedge sparrow. [Dial. Eng.] (d) The haddock.

3. In a carriage: (a) A seat for the driver; -- called also dickey box. (b) A seat at the back for servants.

Dic"ta*graph (?). Var. of Dictograph.