Meaning & use
Quadrantal
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Relating to a quadrant, or measuring exactly ninety degrees or a multiple of ninety degrees.
See it in a sentence
The navigator corrected for quadrantal deviation caused by the ship's iron hull.
A quadrantal angle lies exactly on one of the compass's four cardinal points.
A note on using this word
Common in navigation and surveying, where "quadrantal error" describes compass deviation that changes with the ship's heading relative to the four cardinal directions.
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