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ating magnesium hydrate or carbonate, or by burning magnesium. It has a slightly alkaline reaction, and is used in medicine as a mild antacid laxative. See Magnesium. Magnesia alba Etym: [L.] (Med. Chem.), a bulky white amorphous substance, consisting of a hydrous basic carbonate of magnesium, and used as a mild cathar…

rding to usage; to correct in regard to spelling. In the coalesced into ith, which modern reaction has orthographized to i' th'. Earle.

aracterized by relaxation of the vessels and tissues, with deficient vitality and lack of reaction in the affected tissues. Passive congestion (Med.), congestion due to obstruction to the return of the blood from the affected part. -- Passive iron (Chem.), iron which has been subjected to the action of heat, of strong…

ar substance which consists principally of potassium carbonate, and has a strong alkaline reaction. It is obtained by lixiviating wood ashes, and evaporating the lye, and has been an important source of potassium compounds. It is used in making soap, glass, etc.

and phenol. Its solution in alkalies is brilliant red, but is decolorized by acids. This reaction, being very delicate, is used as an indicator.

enol. Its solution in alkalies is brilliant red, but is decolorized by acids, and as this reaction is exceedingly delicate it is used as an indicator.

of these groups taken collectively, whose work and theories have in common a tendency to reaction against the scientific and naturalistic character of impressionism and neo- impressionism. In a strict sense the term post-impressionism is used to denote the effort at self-expression, rather than representation, shown i…

ioned by affinity and composition; thus, combustion, explosion, and certain solutions are reactions occasioned by chemical properties. Chemical properties are identical when there is identity of composition and structure, and change according as the composition changes. 3. Organoleptic properties, or those forming a cl…

bstance found in the spermatic fluid of salmon. It is soluble in water, which an alkaline reaction, and unites with acids and metallic bases.

rm a sensory impression into a motor impulse. It is an important part of physiological or reaction time. See under Reaction.

Expressing the type, structure, relations, and reactions of a compound; graphic; -- said of formulæ. See under Formula. Rational horizon. (Astron.) See Horizon, 2 (b). -- Rational quantity (Alg. ), one that can be expressed without the use of a radical sign, or in extract parts of unity; -- opposed to irrational or ra…

Having power to react; tending to reaction; of the nature of reaction. -- Re*act"ive*ly, adv. -- Re*act"ive*ness, n.

A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test.

Mutual action and reaction.

Specifically, the reaction or rebounding of a firearm when discharged. Recoil dynamometer (Gunnery), an instrument for measuring the force of the recoil of a firearm. -- Recoil escapement See the Note under Escapement.

Produced in reaction, in resistance, or in return.

A flowing back, as the return of a fluid; ebb; reaction; as, the flux and reflux of the tides. All from me Shall with a fierce reflux on me redound. Milton.

To counteract, as a force, by inertia or reaction.

A sudden reaction; a sudden and complete change; -- applied to the feelings. A sudden and violent revulsion of feeling, both in the Parliament and the country, followed. Macaulay.

y motion, as of rolling; as, a river rolls its waters to the ocean. The flood of Catholic reaction was rolled over Europe. J. A. Symonds.