Part 662

E*lec`tro-met"al*lur`gy (?), n. The act or art precipitating a metal electro-chemical action, by which a coating is deposited, on a prepared surface, as in electroplating and electrotyping; galvanoplasty.

E`lec*trom"e*ter (?), n. [Electro- + -meter: cf. F. électromètre.] (Physics) An instrument for measuring the quantity or intensity of electricity; also, sometimes, and less properly, applied to an instrument which indicates the presence of electricity (usually called an electroscope).

Balance electrometer. See under Balance.

{ E*lec`tro-met"ric (?), E*lec`tro-met"ric*al (?), } a. [Cf. F. électrométrique.] Pertaining to electrometry; made by means of an electrometer; as, an electrometrical experiment.

E`lec*trom"e*try (?), n. [Cf. F. électrométrie.] (Physics) The art or process of making electrical measurements.

E*lec`tro-mo"tion (?), n. The motion of electricity or its passage from one metal to another in a voltaic circuit; mechanical action produced by means of electricity.

E*lec`tro-mo"tive (?), a. Producing electro-motion; producing, or tending to produce, electricity or an electric current; causing electrical action or effects.

Electro-motive force (Physics), the force which produces, or tends to produce, electricity, or an electric current; sometimes used to express the degree of electrification as equivalent to potential, or more properly difference of potential.

E*lec`tro*mo"tor (?), n. [Cf. F. électromoteur.] 1. (Physics) A mover or exciter of electricity; as apparatus for generating a current of electricity.

2. (Mech.) An apparatus or machine for producing motion and mechanical effects by the action of electricity; an electro-magnetic engine.

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E*lec`tro-mus"cu*lar (?), a. (Physiol.) Pertaining the reaction (contraction) of the muscles under electricity, or their sensibility to it.

E*lec"tron (?), n. [NL., fr. Gr. 'h`lektron. See Electric.] Amber; also, the alloy of gold and silver, called electrum.

E*lec`tro-neg"a*tive (?), a. (Chem. & Physics) (a) Having the property of being attracted by an electro-positive body, or a tendency to pass to the positive pole in electrolysis, by the law that opposite electricities attract each other. (b) Negative; nonmetallic; acid; -- opposed to positive, metallic, or basic.

E*lec`tro-neg"a*tive, n. (Chem. & Physics) A body which passes to the positive pole in electrolysis.

E`lec*trop"a*thy (?), n. [Electro- + Gr. pa`qos suffering.] (Med.) The treatment of disease by electricity.

E*lec"tro*phone (?), n. [Electro- + Gr. fwnh` sound.] (Physics) An instrument for producing sound by means of electric currents.

||E*lec`troph"o*rus (?), n.; pl. ||Electrophori (#). [NL., fr. combining form electro- + Gr. fe`rein to bear.] (Physics) An instrument for exciting electricity, and repeating the charge indefinitely by induction, consisting of a flat cake of resin, shellac, or ebonite, upon which is placed a plate of metal.

E*lec`tro-phys`i*o*log"ic*al (?), a. (Physiol.) Pertaining to electrical results produced through physiological agencies, or by change of action in a living organism.

E*lec`tro-phys`i*ol"o*gy (?), n. (Physiol.) That branch of physiology which treats of electric phenomena produced through physiological agencies.

E*lec"tro*plate` (?), v. t. [imp. & p. p. Electroplating.] (Mech.) To plate or cover with a coating of metal, usually silver, nickel, or gold, by means of electrolysis.

E*lec"tro*pla`ter (?), n. One who electroplates.

E*lec"tro*pla`ting (?), n. The art or process of depositing a coating (commonly) of silver, gold, or nickel on an inferior metal, by means of electricity.

E*lec`tro-po"lar (?), a. (Physics) Possessing electrical polarity; positively electrified at one end, or on one surface, and negatively at the other; -- said of a conductor.

E*lec`tro-pos"i*tive (?), a. 1. (Physics) Of such a nature relatively to some other associated body or bodies, as to tend to the negative pole of a voltaic battery, in electrolysis, while the associated body tends to the positive pole; -- the converse or correlative of electro-negative.

An element that is electro-positive in one compound may be electro-negative in another, and vice versa.

2. (Chem.) Hence: Positive; metallic; basic; -- distinguished from negative, nonmetallic, or acid.

E*lec`tro-pos"i*tive, n. (Chem. & Physics) A body which passes to the negative pole in electrolysis.