Search the Dictionary

Styrene (which was formerly called cinnamene because obtained from cinnamic acid). See Styrene.

Pertaining to, or obtained from, cinnamon. Cinnamic acid (Chem.), a white, crystalline, odorless substance. C6H5.C2H2C2H2.CO2H, formerly obtained from storax and oil of cinnamon, now made from certain benzene derivatives in large quantities, and used for the artificial production of indigo.

A yellow crystalline substance, (C6H5.C2H2)2CO, the ketone of cinnamic acid.

Pertaining to, derived from, or having certain characteristics of, citric and aconitic acids. Citraconic acid (Chem.), a white, crystalline, deliquescent substance, C3H4(CO2H)2, obtained by distillation of citric acid. It is a compound of the ethylene series.

cross between the sweet orange and the trifoliate orange (Citrus trifoliata). It is more acid and has a more pronounced aroma than the orange; the tree is hardier. There are several varieties.

A salt of citric acid.

Of, pertaining to, or derived from, the citron or lemon; as, citric acid. Citric acid (Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberies, etc., as a white crystalline substance, having a pleasant sour taste.

.), one of a class of bodies formed in the coagulation of a albuminous substance by heat, acids, or other agents.

the spontaneous coagulation of freshly drawn blood; the coagulation of milk by rennet, or acid, and the coagulation of egg albumin by heat. Coagulation is generally the change of an albuminous body into an insoluble modification.

A salt of columbic acid; a niobate. See Columbium.

Pertaining to, or containing, columbium or niobium; niobic. Columbic acid (Chem.), a weak acid derived from columbic or niobic oxide, Nb2O5; -- called also niobic acid.

A pricking; stimulation. [Obs.] That acid piecering spirit which, with such activity and compunction, invadeth the brains and nostrils. Sir T. Browne.

an ore; to intensify, by getting rid of useless material; to condense; as, to concentrate acid by evaporation; to concentrate by washing; -- opposed to Ant: dilute. Spirit of vinegar concentrated and reduced to its greatest strength. Arbuthnot.

The act or process of reducing the volume of a liquid, as by evaporation. The acid acquires a higher degree of concentration. Knight.

To become more compact; to be reduced into a denser form. Nitrous acid is gaseous at ordinary temperatures, but condenses into a very volatile liquid at the zero of Fahrenheit. H. Spencer.

used either in aqueous solution or as test paper (Congo paper) for the detection of free acid, which turns it blue.

That which cools, or abates heat or excitement. if acid things were used only as coolers, they would not be so proper in this case. Arbuthnot.

A yellow coal-tar dyestuff which probably consists chiefly of rosolic acid. See Aurin, and Rosolic acid under Rosolic. Red corallin, a red dyestuff which is obtained by treating aurin or rosolic acid with ammonia; -- called also pæonin. -- Yellow corallin. See Aurin.

(Cornus Mas), a European shrub with clusters of small, greenish flowers, followed by very acid but edible drupes resembling cherries.

ed from dogwood (Cornus florida), as a white crystalline substance; -- called also cornic acid.