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, altering, or counteracting what is wrong or injurious; as, alkalies are correctives of acids; penalties are correctives of immoral conduct. Burke.

rrects; as, a corrector of abuses; a corrector of the press; an alkali is a corrector of acids.

inish by gradually separating or destroying small particles of, as by action of a strong acid or a caustic alkali. Aqua fortis corroding copper . . . is wont to reduce it to a green- blue solution. Boyle.

y of corrosion. Corrosion is a particular species of dissolution of bodies, either by an acid or a saline menstruum. John Quincy.

anging, or destroying the texture or substance of a body; as, the corrosive action of an acid. "Corrosive liquors." Grew. "Corrosive famine."Thomson.

Relating to, derived from, or like, the Dipterix odorata, a tree of Guiana. Coumaric acid (Chem.), one of a series of aromatic acids, related to cinnamic acid, the most important of which is a white crystalline substance, HO.C6H4.C2H2.CO2H, obtained from the tonka bean, sweet clover, etc., and also produced artifically…

ystalline substance, C9H6O2, of vanilla- like odor, regarded as an anhydride of coumaric acid, and used in flavoring. Coumarin in also made artificially.

e or add to the strength or influence of some party or interest; as, every vote counts; accidents count for nothing. This excellent man . . . counted among the best and wisest of English statesmen. J. A. Symonds.

A species of Vaccinium (V. Vitis-id), which bears acid red berries which are sometimes used in cookery; -- locally called mountain cranberry.

e stomach of the European crawfishes, and formerly used in medicine for absorbent and antacid purposes; the gastroliths. -- Crab spider (Zoöl.), one of a group of spiders (Laterigradæ); -- called because they can run backwards or sideways like a crab. -- Crab tree, the tree that bears crab applies. -- Crab wood, a l…

A red, acid berry, much used for making sauce, etc.; also, the plant producing it (several species of Vaccinum or Oxycoccus.) The high cranberry or cranberry tree is a species of Viburnum (V. Opulus), and the other is sometimes called low cranberry or marsh cranberry to distinguish it.

Any crustacean of the family Astacidæ, resembling the lobster, but smaller, and found in fresh waters. Crawfishes are esteemed very delicate food both in Europe and America. The North American species are numerous and mostly belong to the genus Cambarus. The blind crawfish of the Mamoth Cave is Cambarus pellucidus. The…

of purification by recrystallization. It is a white crystalline substance, with a gritty acid taste, and is used very largely as an ingredient of baking powders; -- called also potassium bitartrate, acid potassium tartrate, etc.

ted to creatin but more basic in its properties, formed from the latter by the action of acids, and occurring naturally in muscle tissue and in urine. [Written also kretinine.]

A colorless liquid resembling phenol or carbolic acid, homologous with pyrocatechin, and obtained from beechwood tar and gum guaiacum. [Written also creasol.]

Pertaining to, or derived from, cresol, creosote, etc. Cresylic acid. (Chem.) See Cresol.

abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk. Cretaceous acid, an old name for carbonic acid. -- Cretaceous formation (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period; -- called also the chalk formation. See the D…

The point of time when it is to be decided whether any affair or course of action must go on, or be modified or terminate; the decisive moment; the turning point. This hour's the very crisis of your fate. Dryden. The very times of crisis for the fate of the country. Brougham.

on which every good work so much depends. South. Critical angle (Optics), that angle of incidence of a luminous ray at which it is wholly reflected, and no portion of it transmitted. The sine of this angle is the reciprocal of the refractive index of the medium. -- Critical philosophy, the metaphysical system of Kant;…

of artificial production and complex structure. In general they are diazo and sulphonic acid derivatives of benzene and naphthol.