lustrum

• Nom désignant une période de cinq ans, ou historiquement une cérémonie de purification de la population romaine, accomplie tous les cinq ans après le recensement.

A noun referring to a period of five years, or historically, a ceremonial purification of the Roman population conducted every five years after the census.

1. C2formal

   A period of five years, often used in historical or formal contexts.

   Période de cinq ans

   • The project spanned a lustrum before completion.
   • He served as chairman for a full lustrum.
   • The census is conducted every lustrum in some countries.

   Synonymesquinquennium

2. Roman purification ceremonyC2formalbritish

   In ancient Rome, a ceremonial purification of the entire population performed every five years after the census.

   Lustration (purification romaine)

   • The lustrum was a major religious event in ancient Rome.
   • After the census, the censor performed the lustrum.
   • The ritual of the lustrum involved sacrifices and prayers.