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A sealed instrument in writing, on paper or parchment, duly executed and delivered, containing some transfer, bargain, or contract.

Gravely; with low or deep tone; as, a deeply toned instrument.

h distinctness; to ascertain or exhibit clearly; as, the defining power of an optical instrument. Rings . . . very distinct and well defined. Sir I. Newton.

Distinctness or clearness, as of an image formed by an optical instrument; precision in detail.

A division, space, or interval, marked on a mathematical or other instrument, as on a thermometer.

Out of; without; foreign to; out of the agreement, record, will, or other instrument.

An instrument for measuring angles, in surveying, etc. It resembles

An instrument to measure the height and diameter of trees.

An instrument for ascertaining the specific gravity or density of a substance.

An instrument which, placed against the teeth, conveys sound to the auditory nerve; an audiphone. Knight.

An instrument for scraping the teeth.

An instrument or apparatus in which water is separated by evaporation or distillation; the part of a distilling apparatus in which the separation of the vapors is effected.

An instrument formerly used in removing the laminæ of exfoliated bones.

Power of devising; invention; contrivance. I must have instruments of my own device. Landor.

A drawing instrument, combining a protractor and scale.

An instrument, formerly much used for showing the time of day from the shadow of a style or gnomon on a graduated arc or surface; esp., a sundial; but there are lunar and astral dials. The style or gnomon is usually parallel to the earth's axis, but the dial plate may be either horizontal or vertical.…

The instrument or medium used to effect chemical dialysis.

of certain stops in the organ, so called because they extend through the scale of the instrument. They are of several kinds, as open diapason, stopped diapason, double diapason, and the like.

An instrument for measuring the transparency of the air.

An instrument designed for transmitting pictures by telegraph. Fallows.