anomalistic month

Origin

anomalistic month

noun Astronomy.
See under month (def. 5).

Origin:
1760–70

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Anomalistic month is always a great word to know.
So is Polaris. Does it mean:
the polestar or North Star, a star of the second magnitude close to the north pole of the heavens, in the constellation Ursa Minor
any of various groups of stars to which definite names have been given and the section of the heavens occupied by such a group, such as Ursa Major, Andromeda
Dictionary.com Unabridged

month

[muhnth]
noun
1.
Also called calendar month. any of the twelve parts, as January or February, into which the calendar year is divided.
2.
the time from any day of one calendar month to the corresponding day of the next.
3.
a period of four weeks or 30 days.
4.
Also called solar month. one-twelfth of a solar or tropical year.
5.
Also called lunar month. the period of a complete revolution of the moon around the earth, as the period between successive new moons (synodic month), equal to 29.531 days, or the period between successive conjunctions with a star (sidereal month), equal to 27.322 days, or the period between successive perigees (anomalistic month), equal to 27.555 days, or the period between successive similar nodes (nodical month or draconic month), equal to 27.212 days.
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6.
an unusually long period of time of indefinite length: I haven't seen him for months.
COLLAPSE

Origin:
before 900; Middle English; Old English mōnath; cognate with Old High German mānōd, Old Norse mānathr. See moon
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To anomalistic month
Collins
World English Dictionary
anomalistic month
 
n
the interval between two successive passages of the moon through perigee; 27.55455 days

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

month
O.E. monað, from P.Gmc. *mænoth- (O.N. manaðr, M.Du. manet, Du. maand, O.H.G. manod, Ger. Monat, Goth. menoþs "month"), related to *mænon- "moon" (see moon). Its cognates mean only "month" in the Romance languages, but in Gmc. generally continue to
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do double duty. Phrase a month of Sundays "a very long time" is from 1832 (roughly 7 and a half months, but never used literally).
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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