vicennis

• vīgennis

From vīc- (“twenty”) +‎ annus (“year”) +‎ -is (forming compound adjectives).

• (Classical Latin) IPA^(key): [wiːˈkɛn.nɪs]
• (modern Italianate Ecclesiastical) IPA^(key): [viˈt͡ʃɛn.nis]

vīcennis (neuter vīcenne); third-declension two-termination adjective (post-classical)

1. celebrated or occuring every twenty years, vicennial
2. of twenty years, lasting twenty years
3. twenty-year-old
   • 6th century AD, Angelramnus Metensis, Collectio Canonum Regulae Ancyrani concilii numero XXIV priores quidem sunt Nicaenis: sed ideo Nicaenis istae postponuntur, propter sancti et magni concilii auctoritatem Nicaeae congregati..XV:

     Nondum vicennes, post XV annos in poenitentia exactos, orationum communionem recipiant. Deinde post quinquennium communionem altaris percipiant. Quibus etiam prolixius tempus ad agendam poenitentiam imponendum est, si tale scelus frequentaverint. Qui autem jam vicennarii et uxorati ita peccaverint, XXVI annis poenitentia exactis tandem in oratione communicent, deinde post quinquennium oblationis sacramenta percipiant. Qui vero quinquagenarii et uxorati ita peccaverunt, tandem ad exitum vitae communionem recipiant.

     (please add an English translation of this quotation)

Third-declension two-termination adjective.

• vicennis, in ΛΟΓΕΙΟΝ [Logeion] Dictionaries for Ancient Greek and Latin (in English, French, Spanish, German, Dutch and Chinese), University of Chicago, since 2011
• “vicennis”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.