vicennium

From Latin vicennium, from vīcennis (“20-year”) + -ium, from vīciēs (“20 times”) + annus (“year”) + -is (suffix forming compound adjectives). Equivalent to vicennial +‎ -ium.

vicennium (plural vicennia or vicenniums)

1. (rare) A period of twenty years.

• k'atun

• annum (1 year), biennium (2), triennium (3), quadrennium (4), quinquennium (5), sexennium (6), septennium (7), octennium (8), novennium (9), decennium (10), tricennium (30), centennium (100), quincentennium (500), millennium (1000), decamillennium (10,000), centimillennium (100,000), millionennium (1,000,000)

• (Classical Latin) IPA^(key): [wiːˈkɛn.ni.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [viˈt͡ʃɛn.ni.um]

From vīcennis (“20-year”) +‎ -ium (“-ium: forming abstract nouns”), from vīciēs (“20 times”) + annus (“year”) + -is (suffix forming compound adjectives).

vīcennium n (genitive vīcenniī or vīcennī); second declension

1. vicennium, a 20-year period

Second-declension noun (neuter).

¹Found in older Latin (until the Augustan Age).

• English: vicennium
• Italian: vicennio

vīcennium

1. genitive masculine/feminine/neuter plural of vīcennis

• “vicennium”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• vicennium in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.