lustrum

noun

lus·​trum ˈlə-strəm How to pronounce lustrum (audio)
plural lustrums or lustra ˈlə-strə How to pronounce lustrum (audio)
1
: a period of five years
2
a
: a purification of the whole Roman people made in ancient times after the census every five years
b
: the Roman census

Word History

Etymology

Latin

First Known Use

1590, in the meaning defined at sense 1

Time Traveler
The first known use of lustrum was in 1590

Dictionary Entries Near lustrum

Cite this Entry

“Lustrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lustrum. Accessed 17 Jul. 2024.

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