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A colorless, gaseous hydrocarbon, C2H4, forming an important ingredient of illuminating gas, and also obtained by the action of concentrated sulphuric acid in alcohol. It is an unsaturated compound and combines directly with chlorine and bromine to form oily liquids (Dutch liquid), -- hence called olefiant gas. Called…

The art or process of determining he constituents of a gaseous mixture by means of the eudiometer, or for ascertaining the purity of the air or the amount of oxygen in it.

h a solid substance or in a solid form; reduction to a non-volatile condition; -- said of gaseous elements.

separation of the mass, and which easily yield to pressure; capable of flowing; liquid or gaseous.

The quality of being fluid or capable of flowing; a liquid, aëriform. or gaseous state; -- opposed to solidity. It was this want of organization, this looseness and fluidity of the new movement, that made it penetrate through every class of society. J. R. Green.

A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepar…

State of being gaseous. [R] Eng. Cyc.

Having a form of gas; gaseous.

To become gas; to pass from a liquid to a gaseous state. Scientific American.

A gaseous element found in the atmospheres of the sun and earth and in some rare minerals.

A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those o…

Pertaining to, or depending upon, both liquid and gaseous substances; as, hydropneumatic apparatus for collecting gases over water or other liquids.

An inert gaseous element of the argon group, occurring in air to the extent of about one volume in a million. It was discovered by Ramsay and Travers in 1898. Liquefying point, -- 152º C.; symbol, Kr; atomic weight, 83.0.

A light, colorless, gaseous, inflammable hydrocarbon, CH4; marsh gas. See Marsh gas, under Gas. Methane series (Chem.), a series of saturated hydrocarbons, of which methane is the first member and type, and (because of their general chemical inertness and indifference) called also the paraffin (little affinity) series.…

luminous mass of matter situated beyond the solar system among the stars. True nebulæ are gaseous; but very distant star clusters often appear like them in the telescope.

Forming or producing an oil; specifically, designating a colorless gaseous hydrocarbon called ethylene. [Archaic]

A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.

A colorless gaseous substance (O

An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture. Faraday.

ethane or marsh-gas series; hence, by extension, any substance, whether solid, liquid, or gaseous, of the same chemical series; thus coal gas and kerosene consist largely of paraffins.