Gyrocompass Definition
jīrō-kŭmpəs, -kŏm-
noun
A compass consisting of a motor-operated gyroscope whose rotating axis, kept in a horizontal plane, takes a position parallel to the axis of the earth's rotation and thus points to the geographical north pole instead of to the magnetic pole.
Webster's New World
A north-seeking form of gyroscope used as a directional reference in navigation.
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