A lustration or purification, especially the purification ofthe whole Roman people, which was made by the censors once in fiveyears. Hence: A period of five years.

]]>https://definedictionarymeaning.com/topic/13389/lustrumRSS for NodeSun, 14 Jun 2026 04:53:50 GMTTue, 21 Mar 2017 19:37:55 GMT60A five-year period (fortunately not a woman's period). Often used when numbering a fifth, tenth, etc. anniversary.

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