(n.) A lustration or purification, especially the purification of the whole Roman people, which was made by the censors once in five years. Hence: A period of five years.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). lustrum. Retrieved September 21, 2026, from http://smartdefine.org/lustrum/definitions/2029311 |
| Chicago | Webster's. 2011. "lustrum" http://smartdefine.org/lustrum/definitions/2029311 (accessed September 21, 2026). |
| Harvard | Webster's 2011, lustrum, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/lustrum/definitions/2029311>. |
| MLA | Webster's. "lustrum" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/lustrum/definitions/2029311> |