| Title | gyroscope |
|---|---|
| Text |
Merriam-Webster's Collegiate Dictionary gy·ro·scope ETYMOLOGY French DATE 1856 : a wheel or disk mounted to spin rapidly about an axis and also free to rotate about one or both of two axes perpendicular to each other and to the axis of spin so that a rotation of one of the two mutually perpendicular axes results from application of torque to the other when the wheel is spinning and so that the entire apparatus offers considerable opposition depending on the angular momentum to any torque that would change the direction of the axis of spin English Etymology gyroscope 1856, invented and named in Fr. 1852 by Foucault, from Gk.gyros "circle" + skopos "watcher," because the device demonstrates that the earth rotates. Oxford Advanced Learner's Dictionary-牛津双解-OALD7 gyroscope gyro·scope / 5dVairEskEup; NAmE -skoup / (also informal gyro / 5dVairEu; NAmE -rou / ) noun a device consisting of a wheel that spins rapidly inside a frame and does not change position when the frame is moved. Gyroscopes are often used to keep ships and aircraft steady. 陀螺仪；回转仪 • gyro·scop·ic / 7dVairE5skCpik; NAmE -5skB:pik / adj. Webster's Third New International Dictionary, Unabridged gy·ro·scope \ˈjīrəˌskōp\ noun Etymology: French, from gyro- gyr- + -scope 1. : a wheel or disk mounted to spin rapidly about an axis and also free to rotate about one or both of two axes perpendicular to each other and to the axis of spin so that a rotation of one of the two mutually perpendicular axes results from application of torque to the other when the wheel is spinning, the entire apparatus offering considerable opposition depending on the angular momentum to any torque that would change the direction of the axis of spin 2. : something resembling a gyroscope : balance wheel 2 < systematic retirement programs can thus serve as a sort of economic gyroscope — New Republic > |
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