Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of instrument is as below...

Chorograph :: Chorograph (n.) An instrument for constructing triangles in marine surveying, etc..

Base :: Base (n.) A low, or deep, sound. (Mus.) (a) The lowest part; the deepest male voice. (b) One who sings, or the instrument which plays, base..

Calibration :: Calibration (n.) The process of estimating the caliber a tube, as of a thermometer tube, in order to graduate it to a scale of degrees; also, more generally, the determination of the true value of the spaces in any graduated instrument..

Whirligig :: Whirligig (n.) A mediaeval instrument for punishing petty offenders, being a kind of wooden cage turning on a pivot, in which the offender was whirled round with great velocity..

Polarimeter :: Polarimeter (n.) An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray..

Minstrel :: Minstrel (n.) In the Middle Ages, one of an order of men who subsisted by the arts of poetry and music, and sang verses to the accompaniment of a harp or other instrument; in modern times, a poet; a bard; a singer and harper; a musician..

Almacantar :: Almacantar (n.) A recently invented instrument for observing the heavenly bodies as they cross a given almacantar circle. See Almucantar.

Pyroscope :: Pyroscope (n.) An instrument for measuring the intensity of heat radiating from a fire, or the cooling influence of bodies. It is a differential thermometer, having one bulb coated with gold or silver leaf..

Vitiate :: Vitiate (v. t.) To cause to fail of effect, either wholly or in part; to make void; to destroy, as the validity or binding force of an instrument or transaction; to annul; as, any undue influence exerted on a jury vitiates their verdict; fraud vitiates a contract..

Autodynamic :: Autodynamic (a.) Supplying its own power; -- applied to an instrument of the nature of a water-ram.

Sextant :: Sextant (n.) An instrument for measuring angular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. See Quadrant..

Lucimeter :: Lucimeter (n.) an instrument for measuring the intensity of light; a photometer.

Orlo :: Orlo (n.) A wind instrument of music in use among the Spaniards.

Vibroscope :: Vibroscope (n.) An instrument resembling the phenakistoscope.

Astroscope :: Astroscope (n.) An old astronomical instrument, formed of two cones, on whose surface the constellations were delineated..

Rein :: Rein (n.) Hence, an instrument or means of curbing, restraining, or governing; government; restraint..

Aperture :: Aperture (n.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture..

Chiroplast :: Chiroplast (n.) An instrument to guid the hands and fingers of pupils in playing on the piano, etc..

Cocus Wood :: Cocus wood () A West Indian wood, used for making flutes and other musical instruments..

Rugine :: Rugine (n.) An instrument for scraping the periosteum from bones; a raspatory.

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