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An instrument designed to mark the presence of water, especially in air. Weale.

A device for raising water by the direct action of steam; a pulsometer.

An instrument which shows whether there is more or less moisture in the atmosphere, without indicating its amount.

An instrument for ascertaining the susceptibility of a person to hypnotic influences.

Not proper; not suitable; not fitted to the circumstances, design, or end; unfit; not becoming; incongruous; inappropriate; indecent; as, an improper medicine; improper thought, behavior, language, dress. Follow'd his enemy king, and did him service, Improper for a slave. Shak. And to their proper operation still, Ascr…

The act of upbraiding or taunting; a reproach; a taunt. [Obs.] Improperatios and terms of scurrility. Sir T. Browne

A series of antiphons and responses, expressing the sorrowful remonstrance of our Lord with his people; -- sung on the morning of the Good Friday in place of the usual daily Mass of the Roman ritual. Grove.

In an improper manner; not properly; unsuitably; unbecomingly.

Impropriety. [Obs.]

Aryan; -- applied to the languages of India and Europe which are derived from the prehistoric Aryan language; also, pertaining to the people or nations who speak these languages; as, the Indo- European or Aryan family. The common origin of the Indo-European nations. Tylor.

Agency; influence; production of effects. [Obs.] Bp. Hall.

Not operative; not active; producing no effects; as, laws renderd inoperative by neglect; inoperative remedies or processes.

Having no operculum; -- said of certain gastropod shells.

t without right the advantage that one should gain from the other; to traffic without a proper license; to intrude; to forestall others; to intermeddle.

One who interlopes; one who interlopes; one who unlawfully intrudes upon a property, a station, or an office; one who interferes wrongfully or officiously. The untrained man, . . . the interloper as to the professions. I. Taylor.

Of or pertaining to the interoperculum. -- n.

The postero-inferior opercular bone, in fishes.

A kind of ophthalmoscope.

A philosophical toy for exhibiting the prismatic tints by means of thin films.

Pepsin modified by exposure to a temperature of from 40º to 60º C.