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A device consisting of a spinning mass, typically a disk or wheel, usually mounted on a gimbal so that its axis can turn freely in one or more directions and thereby maintain its orientation regardless of any movement of the base.

gy′ro·scop′ic (-skŏp′ĭk) adj.
gy′ro·scop′i·cal·ly adv.


(ˈdʒaɪrəˌskəʊp) or


(General Physics) a device containing a disc rotating on an axis that can turn freely in any direction so that the disc resists the action of an applied couple and tends to maintain the same orientation in space irrespective of the movement of the surrounding structure. Sometimes shortened to: gyro
gyroscopic adj
ˌgyroˈscopically adv
ˌgyroˈscopics n


(ˈdʒaɪ rəˌskoʊp)

an apparatus consisting of a rotating wheel so mounted that its axis can turn freely in certain or all directions, capable of maintaining the same absolute direction in space in spite of movements of the mountings: used to maintain equilibrium and to determine direction.
[1855–60; < French; see gyro-, -scope]
gy`ro•scop′ic (-ˈskɒp ɪk) adj.
gy`ro•scop′i•cal•ly, adv.


An instrument consisting of a disk or wheel that spins rapidly about an axis like a top. The spinning motion keeps the axis fixed even if the base is turned in any direction, making the gyroscope an accurate navigational instrument and an effective stabilizing device in ships and airplanes.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gyroscope - rotating mechanism in the form of a universally mounted spinning wheel that offers resistance to turns in any directiongyroscope - rotating mechanism in the form of a universally mounted spinning wheel that offers resistance to turns in any direction
gyrocompass - a compass that does not depend on magnetism but uses a gyroscope instead
gyrostabiliser, gyrostabilizer - a stabilizer consisting of a heavy gyroscope that spins on a vertical axis; reduces side-to-side rolling of a ship or plane
rotating mechanism - a mechanism that rotates
References in classic literature ?
"So I have been working out a sort of modified gyroscope, and it seems to answer the purpose.
'To "GYRE" is to go round and round like a gyroscope. To "GIMBLE" is to make holes like a gimlet.'
He was a gyroscope of blows, a whirlwind of destruction.
"Suppose the gyroscope stopped!" Few of them anticipated a tithe of what the Brennan mono-rail would do for their railway securities and the face of the world.
In order to make the uncertainty of MEMS gyroscope depicted in (6) controllable, there must be unknown matrices of appropriate dimensions G, H, and p(t) such that [DELTA]A = CG, [DELTA]B = CH, and d(t) = Cp(t).
Wang and Liu [19] have proposed the method of using the single degree of freedom gyroscope to control the structure random vibration, but this method is simple and cannot realize the multidirection vibration reduction.
The gyroscope sensor was developed independently by QST, which adopted Hua Hong Semiconductor's leading Microelectromechanical Systems (MEMS) manufacturing technology.
* Constant bias--can be defined as an output of the sensor (accelerometer or gyroscope) while it is not affected by any external force or angular rate.
It also has a heart rate sensor, UV detector, barometer, gyroscope, accelerometer and GPS Sensor.
And he says that a demonstration of even a small amount of audio pickup through the phones' gyroscopes should serve as a warning to Google to change how easily rogue Android apps could exploit the sensors' audio sensitivity.
A gyrostat is a system of bodies whose relative motion does not alter the mass distribution of the system: for example, a gyroscope attached to an axisymmetric rotor; in a Volterra (1899) gyrostat, the rotor spins at a constant angular velocity relative to its "carrier" body (Wittenburg 2008).
The polymer-based resonator used in RIOG requires a much larger diameter and a lower propagation loss because the performance of gyroscope mainly depends on the enclosed area and the propagation loss of the waveguide resonator [3,19].