vicennium means A period of twenty years. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “vicennium” is a great word
A period of twenty years, a precise chronological span distilled from the Latin vicennium, from vīciēs ("twenty times") + annus ("year") + -ium (noun-forming suffix). Unlike a "decade," which is its exact half, or a "generation," which blurs into social and biological estimates, a vicennium is a fixed and patient unit. It is the growth of a sapling into a shade-giving tree, the quiet revolution from a new technology to a discarded relic, and the slow, certain greying at a man's temples—a unit of change just long enough to make loss feel mathematical, and not like theft.
Etymology
From Latin vicennium, from vīcennis (“20-year”) + -ium, from vīciēs (“20 times”) + annus (“year”) + -is (suffix forming compound adjectives). Equivalent to vicennial + -ium.
noun
- A period of twenty years.