Magnetic amplitude

	the angular distance of a heavenly body, when on the horizon, from the magnetic east or west point as indicated by the compass. The difference between the magnetic and the true or astronomical amplitude (see 3 above) is the "variation of the compass."
	etc. See under Amplitude, Attraction, etc.

magnetic amplitude

[mag′ned·ik ′am·plə‚tüd] (navigation) Angular distance of a celestial body north or south of the prime vertical circle and relative to magnetic east or west.

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