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The powder or other combustible used to communicate fire to a charge of gunpowder, as in a firearm.

A furnace for producing combustible gas which is used for fuel.

Chemical properties, or those which are conditioned by affinity and composition; thus, combustion, explosion, and certain solutions are reactions occasioned by chemical properties. Chemical properties are identical when there is identity of composition and structure, and change according as the composition changes. 3.…

A funeral pile; a combustible heap on which the dead are burned; hence, any pile to be burnt. For nine long nights, through all the dusky air, The pyres thick flaming shot a dismal glare. Pope.

A kind of empyreumatic oil produced by the combustion of textures of hemp, linen, or cotton in a copper vessel, -- formerly used as a remedial agent. Dunglison.

An engine, usually an internal-combustion engine of a certain type (the radial type) having several cylinders arranged radially like the spokes of a complete wheel. The semiradial engine has radiating cylinders on only one side of the crank shaft.

etal.), a furnace having a regenerator in which gas used for fuel, and air for supporting combustion, are heated; a Siemens furnace.

proceedings. -- Return flue, in a steam boiler, a flue which conducts flame or gases of combustion in a direction contrary to their previous movement in another flue. -- Return pipe (Steam Heating), a pipe by which water of condensation from a heater or radiator is conveyed back toward the boiler.

firework consisting of a cylindrical case of paper or metal filled with a composition of combustible ingredients, as niter, charcoal, and sulphur, and fastened to a guiding stick. The rocket is projected through the air by the force arising from the expansion of the gases liberated by combustion of the composition. Ro…

by electricity, compressed air, a spring, or an explosive gas), attached to an internal- combustion engine, as on an automobile, and used as a means of starting the engine without cranking it by hand.

Designating an internal-combustion engine of a type resembling the Diesel engine in using as fuel heavy oil which is injected in a spray just before the end of the compression stroke and is fired without electrical ignition. The fuel is sprayed into an iron box (called a hot bulb or hot pot) opening into the combustion…

chestra; -- so called from its form. Pharaoh's serpent (Chem.), mercuric sulphocyanate, a combustible white substance which in burning gives off a poisonous vapor and leaves a peculiar brown voluminous residue which is expelled in a serpentine from. It is employed as a scientific toy. -- Serpent cucumber (Bot.), the l…

The muffler of an internal-combustion engine.

To burn and smoke without flame; to waste away by a slow and supressed combustion. The smoldering dust did round about him smoke. Spenser.

A heap of damp combustibles partially ignited and burning slowly, placed on the windward side of a house, tent, or the like, in order, by the thick smoke, to keep off mosquitoes or other insects. [U. S.] Bartlett.

A black substance formed by combustion, or disengaged from fuel in the process of combustion, which rises in fine particles, and adheres to the sides of the chimney or pipe conveying the smoke; strictly, the fine powder, consisting chiefly of carbon, which colors smoke, and which is the result of imperfect combustion.…

A small particle of fire or ignited substance which is emitted by a body in combustion. Man is born unto trouble, as hte sparks fly upward. Job v. 7.

An induction coil, esp. of an internal-combustion engine, wireless telegraph apparatus, etc.

In internal-combustion engines with electric ignition, a plug, screwed into the cylinder head, having through it an insulated wire which is connected with the induction coil or magneto circuit on the outside, and forms, with another terminal on the base of the plug, a spark gap inside the cylinder.

hout being planted, or without human labor; as, a spontaneous growth of wood. Spontaneous combustion, combustion produced in a substance by the evolution of heat through the chemical action of its own elements; as, the spontaneous combustion of waste matter saturated with oil. -- Spontaneous generation. (Biol.) See un…