bissextile

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bissextile

a leap year
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

bis·sex·tile

 (bī-sĕk′stĭl, -stīl′, bĭ-)
adj.
1. Of or relating to a leap year.
2. Of or relating to the extra day falling in a leap year.
n.
A leap year.

[Late Latin bissextīlis, containing an intercalary day, from bisextus (diēs), bis sextus (diēs) and Latin bisextum, intercalary day : bis, twice; see bis + sextus, sixth (because the sixth day before the Calends of March on February 24 occurred twice every leap year); see sext1.]
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.

bissextile

(bɪˈsɛkstaɪl)
adj
(Units) (of a month or year) containing the extra day of a leap year
n
a rare name for leap year
[C16: from Late Latin bissextilis annus leap year, from Latin bissextus, from bi-1 + sextus sixth; referring to February 24, the 6th day before the Calends of March]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Translations
bisiesto
année bissextilebissextil
bissexto

bissextile

(form)
nSchaltjahr nt
adjSchalt-
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
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References in periodicals archive
Le calendrier julien est donc un calendrier solaire de 11 mois de 30 et 31 jours chacun auxquels s'ajoutent un mois de 28 jours, plus AaAaAe de jour supplAaAaAeA@mentaire (annAaAaAeA@e bissextile tous les 4 ans), ce qui d une annAaAaAeA@e de 365 jours AaAaAeAa-.
This corresponds to 8 years minus 2 days (or 8 years minus 1 day if the interval includes a non bissextile century year), and approximates within two days to 13 sidereal revolutions of the planet.
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