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ort. -- Detonating primer, a primer exploded by a fuse; -- used to explode gun cotton in blasting operations. -- Detonating tube, a strong tube of glass, usually graduated, closed at one end, and furnished with two wires passing through its sides at opposite points, and nearly meeting, for the purpose of exploding ga…

To blast by the influence of a baleful star. [Obs.] Sir P. Sidney.

A pipe for leading combustible gases downward from the top of the blast furnace to the hot-blast stoves, boilers, etc., where they are burned.

tacles of friction and the weight of the body. -- Black draught. See under Black, a. -- Blast draught, or Forced draught, the draught produced by a blower, as by blowing in air beneath a fire or drawing out the gases from above it. -- Natural draught, the draught produced by the atmosphere flowing, by its own weight…

rief of anxiety; insanity; madness. [Obs.] That unmatched form and feature of blown youth Blasted with ecstasy. Shak. Our words will but increase his ecstasy. Marlowe.

The outer layer of the blastoderm; epiblast.

cing nothing; unfruitful; -- said of a plant or tree; as, an empty vine. Seven empty ears blasted with the east wind. Gen. xli. 27.

The innermost layer of the blastoderm and the structures derived from it; the hypoblast; the entoblast. See Illust. of Ectoderm.

The clogging of a blast furnace.

digestive tract; distinguished from a schizocoele, which arises by a splitting of the mesoblast of the embryo.

A combining form signifying within; as, entoblast.

See Endoderm, and Illust. of Blastoderm.

out of a room in ventilating it. -- Exhaust nozzle, Exhaust orifice (Steam Engine), the blast orifice or nozzle. -- Exhaust pipe (Steam Engine), the pipe that conveys exhaust steam from the cylinder to the atmosphere or to the condenser. Exhaust port (Steam Engine), the opening, in the cylinder or valve, by which th…

To burst forth; to fly out with a blast. [Obs.] "The ponderous ball expires." Dryden.

A blast from beneath. [Obs.] Bacon.

, a wheel with vanes fixed on a rotating shaft inclosed in a case or chamber, to create a blast of air (fan blast) for forge purposes, or a current for draft and ventilation; a fanner. -- Fan cricket (Zoöl.), a mole cricket. -- Fan light (Arch.), a window over a door; -- so called from the semicircular form and radia…

The arch over the dam of a blast furnace; the tymp arch.

rtable grate; a cresset. Knight. -- Fire beetle. (Zoöl.) See in the Vocabulary. -- Fire blast, a disease of plants which causes them to appear as if burnt by fire. -- Fire box, the chamber of a furnace, steam boiler, etc., for the fire. -- Fire brick, a refractory brick, capable of sustaining intense heat without f…

e now floats, but seems on ground. Milton. Three blustering nights, borne by the southern blast, I floated. Dryden.

An instrument for cleaning out a hole drilled in stone for blasting.