noun🔗ShareA ceremonial purification of all the people, performed every five years after the taking of the census; a lustration."Every five years, the Roman governor conducted a lustrum, purifying the population after the census was completed. "ritualreligionhistorygovernmentChat with AIVocabulary GamePractice Reading
noun🔗Share(by extension) A period of five years."The company's sales figures showed a significant increase over the past lustrum. "timeperiodhistoryChat with AIVocabulary GamePractice Reading
