- the period of time from one new moon to the next (about 29½ days); a lunar month.
Origin of lunation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for lunation
And there the moon is not seen in all the lunation, except in the second quarter.Early Travels in Palestine
Arculf et al.
The number 28 corresponds with the number of days in a lunation.
And there is not the moon seen in all the lunation, save only the second quarter.The Travels of Sir John Mandeville
Lunation is a term sometimes given to the moon's period from any definite phase round to the same phase again.Astronomy
For, says he, because of the double epact that occurs on the 4th and 5th of April that lunation has only 29 days.Our Calendar
George Nichols Packer
Word Origin and History for lunation
"time from one new moon to another," late 14c., from Medieval Latin lunationem, from luna "moon" (see Luna).
Online Etymology Dictionary, © 2010 Douglas Harper