vicenniumn.
rare.
A period of twenty years.
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the world > time > period > year > [noun] > period of specific number of years
hendecadOE
a week of yearsa1382
weekc1384
Olympiada1387
lustre1387
yearc1425
millenary1551
prenticeship1553
septenary1576
lustrum1590
quinquennal1590
seventy1590
septimane1603
quinquennie1606
threescore (years) and tena1616
duodecad1621
quinquennium1621
jubilee1643
quadrenniala1646
chiliad1653
septennary1659
septennium1660
triennial1661
millennium1664
tetraëterid1678
octennial1679
duodenary1681
quadrennium1779
septenniad1836
quinquenniad1842
milliad1843
tricentenary1846
triennium1847
vicennium1847
bimillenary1850
lustration1853
sexennium1858
septennate1874
quinquennial1877
pentad1880
sexennate1898
aeon1960
1847 J. R. McCulloch Descr. & Statist. Acct. Brit. Empire (ed. 3) II. v. vii. 623 The danger of dying of consumption..is greater in this than in the preceding vicennium.
This entry has not yet been fully updated (first published 1917; most recently modified version published online June 2021).
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n.1847