Acceleration of the moon

(Astr. & Physics.) the increase of the moon's mean motion in its orbit, in consequence of which its period of revolution is now shorter than in ancient times.

See also: Acceleration

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
William Fishburn Donkin born; Savilian professor of astronomy at Oxford 1842-'69; wrote The Secular Acceleration of the Moon's Mean Motion, 1861.
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