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quadrant
Part of speech: NounOne- fourth of a circle, or an arc of 90 degrees; an instrument for measuring heights; an instrument for raising a cannon to the height needed for the desired range.
Usage examples "quadrant":- Towards evening the stream turned more decidedly to the north, and at this point Esmo brought out an instrument constructed somewhat on the principle of a sextant or quadrant, but without the mirror, by which we were enabled to take reliable measures of the angles. - "Across the Zodiac", Percy Greg.
- " Third quadrant of the Belt," he said, giving a position in space almost like latitude and longitude on Earth. - "The Planet Strappers", Raymond Zinke Gallun.
- After having oiled the eccentric straps, the link motion and the reversing gear beneath the engine, the reversing lever and the parts above the frame must be oiled, and the reversing lever moved back and forth several times, from end to end of the sector or quadrant, so as to distribute the oil throughout the joints and working surfaces. - "Modern Machine-Shop Practice, Volumes I and II", Joshua Rose.