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The time that elapses between successive new moons, averaging 29 days, 12 hours, 44 minutes; a lunar month.

[Middle English lunacioun, from Medieval Latin lūnātiō, lūnātiōn-, from Latin lūna; see lunar.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Units) another name for synodic month See month6
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(luˈneɪ ʃən)

the period of time from one new moon to the next (about 29½ days).
[1350–1400; Middle English < Medieval Latin lūnātiō]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


the period of the moon’s synodic revolution, from the time of the new moon to the next new moon; one lunar month or approximately 29 1/2 days.
See also: Calendar
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lunation - the period between successive new moons (29.531 days)
lunar year - a period of 12 lunar months
month - a time unit of approximately 30 days; "he was given a month to pay the bill"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Today's lunation suggests you either listen and make a few modifications, or continue regardless.
You can spot some part of Mare Frigoris typically every night between day 4 and 12 of each lunation. Its ease of visibility, however, is not matched by an easy understanding of why it has such an elongated shape, like an eyebrow over Mare Imbrium.
Mars is stirred by this lunation, Aniko Model: so you could be doing a fair bit of travelling or talking, maybe both.
Each month lasts for a full lunation, which is the time span from one mew moon to the next.
We have seen that lunation is thought to cause madness but in the following thirteenth-century example the summer heat is cited as a possible cause of a reoccurrence of ill health.
Mission plans facilitated long-term planning for early phases of the mission and for each month-long lunation of the science phase.
I have been unable to find any information about this Somniale text specifically, but DiTommaso has generously provided me with a reference to a Latin lunation in a manuscript in the Conrady collection.
(37) He showed by analysis of the intensity estimates by himself and five other members of the Circle that these patches--although curious in appearance to the observer--varied systematically in brightness during each lunation. Figure 20 shows a key map and his graphs: there was no evidence for any irregular change.
"Science and the Lunation Cycle", Matrix Journal, 1990
"Misrecognition" therefore designates the process by which the subject situates his "ego, [event prior to its social detei 'lunation, in a fictional direction that will forever remain irreducible" (2002, 4)
Criteria such as these, when calculated on the globe for each lunation, generate lunar date line curves that divide the globe into positive prediction and negative prediction zones.
* In African star lore lunation was used as a celestial analogy for the cycle of life in that the moon is seen to be born, to grow, to decay and die as it passes through its waxing and waning phases.