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. He [Goldsmith] was a great and perhaps an unequaled master of the arts of selection and condensation. Macaulay.

The act or process of recondensing.

f measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics.

A colorless liquid, C4H8O2, obtained by condensation of two molecules of acetaldehyde: CH3CHO + CH3CHO = H3CH(OH)CH2CO; also, any of various derivatives of this. The same reaction has been applied, under the name of aldol condensation, to the production of many compounds.

A mass or nodule of solid matter formed by growing together, by congelation, condensation, coagulation, induration, etc.; a clot; a lump; a calculus. Accidental ossifications or deposits of phosphates of lime in certain organs . . . are called osseous concretions. Dunglison.

crowding anything into a less compass, or the state of being crowded or pressed together; condensation. [Obs.] Fullness of matter, or a pretty close constipation . . . of its particles. Boyle.

he same for each gas, regarded as the limit above which no amount of pressure can produce condensation to a liquid.

g 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 distillation of illuminating gas and coal, of alcohol from sour mash, or of boric acid i…

which the contents of a former work are reduced within a smaller space by curtailment and condensation; a brief summary; an abridgement. [An] epitome of the contents of a very large book. Sydney Smith.

A head or dense cluster of flowers, formed by condensation of a cyme, as in the flowering dogwood.

dation of moist phosphorus, and isolated only as a solution in water. It is regarded as a condensation product of one molecule of phosphoric acid with one of phosphorous acid, by partial dehydration.

still having a curved tube or tubes leading back from the head to the body for continuous condensation and redistillation.

A white or yellowish white crystalline substance, C20H14O4, formed by condensation of the anhydride of phthalic acid and phenol. Its solution in alkalies is brilliant red, but is decolorized by acids. This reaction, being very delicate, is used as an indicator.

One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthaleïn. Their alkaline solutions are fluorescent. Phenol phthalein, a white or yellowish white crystalline substance made from phthalic acid and phenol. Its solution in alkalies…

Of or pertaining to compounds formed by the condensation of two or more molecules of silicic acid. Polysilicic acid (Chem.), any one of a series of acids formed by the condensation of two or more molecules of silicic acid, with elimination of water.

A colorless liquid of a slightly pungent odor, C9H6N.CH3, first obtained as a condensation product of aldehyde and aniline, and regarded as a derivative of quinoline; -- called also methyl quinoline. [Written also chinaldine.]

The act or process of rarefying; the state of being rarefied; - - opposed to condensation; as, the rarefaction of air.

volatile portions are separated from the less volatile by the process of evaporation and condensation; a rectifier.

vious 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.

retort. The name is sometimes applied to the whole apparatus used in in vaporization and condensation.