Search the Dictionary

ure Reason." - - Critical point (Physics), a certain temperature, different for different gases, but always the same for each gas, regarded as the limit above which no amount of pressure can produce condensation to a liquid.

A group of fishes, established by Agassiz, characterized by having scales with a pectinated margin, as in the perch. The group is now generally regarded as artificial.

To sparate the parts of with, or as with, a sharp instrument; to make an incision in; to gash; to sever; to divide. You must cut this flesh from off his breast. Shak. Before the whistling winds the vessels fly, With rapid swiftness cut the liquid way. Pope.

A colorless, inflammable, poisonous gas, C2N2, with a peach- blossom odor, so called from its tendency to form blue compounds; obtained by heating ammonium oxalate, mercuric cyanide, etc. It is obtained in combination, forming an alkaline cyanide when nitrogen or a nitrogenous compound is strongly ignited with carbon a…

An order of fishes, formerly proposed by Agassiz, for those with thin, smooth scales, destitute of marginal spines, as the herring and salmon. The group is now regarded as artificial.

A gaseous prodact, formed in coal mines, old wells, pints, etc. Choke damp, a damp consisting principally of carboniCarbonic acid, under Carbonic. -- Damp sheet, a curtain in a mine gallery to direct air currents and prevent accumulation of gas. -- Fire damp, a damp consisting chiefly of light carbureted hydrogen; --…

An instrument for testing the density of gases, consisting of a thin glass globe, which is weighed in the gas or gases, and then in an atmosphere of known density.

To cut or mark with an incision; to gash. Moxon.

deflects, as a diaphragm in a furnace, or a come in a lamp (to deflect and mingle air and gases and help combustion).

ton, or the supposed principle of inflammability. Priestley. Dephlogisticated air, oxygen gas; -- so called by Dr. Priestly and others of his time. -- De`phlo*gis`ti*ca"tion, n.

from Detonate. Detonating gas, a mixture of two volumes of hydrogen with one volume of oxygen, which explodes with a loud report upon ignition. -- Detonating powder, any powder or solid substance, as fulminate of mercury, which when struck, explodes with violence and a loud report. -- Detonating primer, a primer expl…

ourse or a method; to stray or go astray; to err; to digress; to diverge; to vary. Thus Pegasus, a nearer way to take, May boldly deviate from the common track. Pope.

A liquid hydrocarbon, C8H18, of the marsh-gas series, being one of several octanes, and consisting of two butyl radicals. Cf. Octane.

he act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.

A subclass of gastropod mollusks in which the sexes are separate. It includes most of the large marine species, like the conchs, cones, and cowries.

d body breaks up into simpler constituents; -- said particularly of the action of heat on gaseous or volatile substances; as, the dissociation of the sulphur molecules; the dissociation of ammonium chloride into hydrochloric acid and ammonia.

tile parts of a substance from the more fixed; specifically, the operation of driving off gas or vapor from volatile liquids or solids, by heat in a retort or still, and the condensation of the products as far as possible by a cool receiver, alembic, or condenser; rectification; vaporization; condensation; as, the dist…

An order of gastropods, including the true limpets, and having the teeth on the odontophore or lingual ribbon.

A small constellation between Aquila and Pegasus. See Delphinus, n.,

entle. O my dove, . . . let me hear thy voice. Cant. ii. 14. Dove tick (Zoöl.), a mite (Argas reflexus) which infests doves and other birds. -- Soiled dove, a prostitute. [Slang]