Definition, Meaning & Synonyms

lustrum

noun

/ˈlʌstrəm/

Definition

A lustrum is a period of five years, often used in reference to the Roman tradition of counting years between the lustration ceremonies.

Examples

After a lustrum, the city would hold a grand celebration to mark the completion of five years.
The company plans to conduct a review every lustrum to assess progress and goals.
In a lustrum’s time, many significant changes can take place in a community.

Meaning

The term ‘lustrum’ is derived from ancient Roman times and signifies a five-year interval, typically associated with the purification of the army and the counting of citizens.