bisextilis

Latin edit

(Classical) IPA^(key): /biˈsek.sti.lis/, [bɪˈs̠ɛks̠t̪ɪlʲɪs̠]
(modern Italianate Ecclesiastical) IPA^(key): /biˈsek.sti.lis/, [biˈs̬ɛkst̪ilis]

bisextilis (neuter bisextile); third-declension two-termination adjective

(relational) leap year, bissextile
- 1553, Luminarum atque Planetarum motuum Tabulae octogina quinque, omnium ex his quae Alphonsum sequuntur quam faciles‎^[1]:
  Anni videlicet solares ex diebus 365 et quarta partes unius diei: quorum tres primi solum ex 365 diebus pro quolibet numerantur, qui non bissextiles dicuntur: quartus vero, ex 366 diebus componitur, et bissextilis nuncupatur.
  Every solar year is 365 and a quarter days: of these, each of the first three number 365 days, and they are called non-bissextiles, while the fourth, composed of 366 days, is called bissextile.
intercalary

Third-declension two-termination adjective.

Case / Gender	Masc./Fem.	Neuter	Masc./Fem.	Neuter
Number	Singular		Plural
Nominative	bisextilis	bisextile	bisextilēs	bisextilia
Genitive	bisextilis		bisextilium
Dative	bisextilī		bisextilibus
Accusative	bisextilem	bisextile	bisextilēs bisextilīs	bisextilia
Ablative	bisextilī		bisextilibus
Vocative	bisextilis	bisextile	bisextilēs	bisextilia

“bisextilis”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
bisextilis in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
bisextilis in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.