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A graduated scale for measuring the duration of sounds, and determining their different, and the relation of their intervals. J. J. Rousseau.

The art of measuring the duration of sounds or echoes.

An apparatus for determining the amount of oil contained in any substance, or for ascertaining the degree of purity of oil.

Same as Elatrometer.

degree of rarefaction of air contained in the receiver of an air pump. [Spelt also elaterometer.]

An instrument for measuring the strength of electro-dynamic currents.

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.

Pertaining to electrometry; made by means of electrometer; as, an electrometrical experiment.

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.

The art or process of making electrical measurements.

Inducing to vomit; exciting the stomach to discharge its contents by the mouth. -- n.

Inducing to vomit; producing vomiting; emetic. -- E*met"ic*al*ly, adv.

rystalline bitter alkaloid extracted from ipecacuanha root, and regarded as its peculiar emetic principle.

Producing vomiting and purging at the same time.

An ant. Emmet hunter (Zoöl.), the wryneck.

rought accurately and without undue effort to a focus upon the retina; -- opposed to hypermetropia, myopia, an astigmatism.

Pertaining to, or characterized by, emmetropia. The normal or emmetropic eye adjusts itself perfectly for all distances. J. Le Conte.

Same as Emmetropia.

Inflammation of the endometrium.

The membrane lining the inner surface of the uterus, or womb.