English dictionary
lustrum
/'l/@/str/@/m/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a period of five years
Synonyms quinquenniumSource: WordNet 3.0
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a ceremonial purification of the Roman population every five years following the census
Source: WordNet 3.0
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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.
Source: webster1913