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lunation

[loo-ney-shuh n] /luˈneɪ ʃən/
noun
1.
the period of time from one new moon to the next (about 29½ days); a lunar month.
Origin of lunation
1350-1400
1350-1400; Middle English lunacyon < Medieval Latin lūnātiōn- (stem of lūnātiō). See Luna, -ation
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for lunation
Historical Examples
  • 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
  • And there the moon is not seen in all the lunation, except in the second quarter.

  • The number 28 corresponds with the number of days in a lunation.

  • Now that lunation having commenced on the 3rd of December, and consisting of thirty days, will end on the 1st of January.

  • In fact, the year and the lunation are to one another very nearly in the proportion of 235 to 19.

    Astronomical Myths John F. Blake
  • So that in both these cases fever commenced in half a lunation after the contagion was received.

    Zoonomia, Vol. II Erasmus Darwin
  • And there is not the moon seen in all the lunation, save only the second quarter.

  • The fever and eruption in the distinct kind take up another quarter of a lunation, and the maturation another quarter.

    Zoonomia, Vol. II Erasmus Darwin
  • lunation is a term sometimes given to the moon's period from any definite phase round to the same phase again.

    Astronomy David Todd
British Dictionary definitions for lunation

lunation

/luːˈneɪʃən/
noun
1.
another name for synodic month See month (sense 6)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for lunation
n.

"time from one new moon to another," late 14c., from Medieval Latin lunationem, from luna "moon" (see Luna).

Online Etymology Dictionary, © 2010 Douglas Harper
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8
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