Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun lustrum

2 senses of lustrum

Sense 1
lustrum -- (a period of five years)
       => time period, period of time, period -- (an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period")

Sense 2
lustrum -- (a ceremonial purification of the Roman population every five years following the census)
       => ceremony -- (the proper or conventional behavior on some solemn occasion; "an inaugural ceremony")