biennis

From bi- (“two”) +‎ annus (“year”) +‎ -is (suffix forming compound adjectives).

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

biennis (neuter bienne); third-declension two-termination adjective

1. of two years, lasting two years

   (Can we find and add a quotation of Aulus Gellius to this entry?)

Third-declension two-termination adjective.

• (of two years): biennālis
• (of people: two years old): bīmus

• triennis, quadriennis, quinquennis, sexennis, septuennis, octennis, novennis, decennis, undecennis, duodecennis, tridecennis, quattuordecennis, quindecennis, sedecennis, septendecennis, duodevicennis, undevicennis, vicennis, tricennis, quadragennis, quinquagennis, sexagennis, septuagennis, octogennis, nonagennis, centennis, ducentennis, trecentennis, quadringentennis, quingentennis, sescentennis, septingentennis, octingentennis, nongentennis, millennis

• bienniperennāns

• biennium

• Italian: bienne
• Spanish: biene

• “bĭennis”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• bĭennis in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette, page 217/2.
• “biennis” on page 233/1 of the Oxford Latin Dictionary (1st ed., 1968–82)