lustrum

noun
lus·​trum | \ ˈlə-strəm How to pronounce lustrum (audio) \
plural lustrums or lustra\ ˈlə-​strə How to pronounce lustra (audio) \

Definition of lustrum

1 : a period of five years
2a : a purification of the whole Roman people made in ancient times after the census every five years
b : the Roman census

First Known Use of lustrum

1590, in the meaning defined at sense 1

History and Etymology for lustrum

Latin

Keep scrolling for more

Learn More about lustrum

Dictionary Entries near lustrum

lustrical

lustring

lustrous

lustrum

lusty

lusus

lusus naturae

Statistics for lustrum

Look-up Popularity

Time Traveler for lustrum

The first known use of lustrum was in 1590

See more words from the same year

Comments on lustrum

What made you want to look up lustrum? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a tendency to relapse

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!