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n. pl. lus·trums or lus·tra (-trə)
1. A ceremonial purification of the entire ancient Roman population after the census every five years.
2. A period of five years.

[Latin lūstrum; see luster.]


(ˈlʌstrəm) or


n, pl -trums or -tra (-trə)
(Units) a period of five years
[C16: from Latin: ceremony of purification, from lustrāre to brighten, purify]


(ˈlʌs trəm)

n., pl. -trums, -tra (-trə).
1. (in ancient Rome) a lustration or ceremonial purification of the people, performed every five years, after the taking of the census.
2. Also, luster ;esp. Brit., lustre. a period of five years.
[1580–90; < Latin lūstrum; compare luster1]

lustrum, luster, lustre

a period of five years.
See also: Calendar
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lustrum - a period of five years
period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"
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"
capital of Italy, Eternal City, Italian capital, Rome, Roma - capital and largest city of Italy; on the Tiber; seat of the Roman Catholic Church; formerly the capital of the Roman Republic and the Roman Empire
antiquity - the historic period preceding the Middle Ages in Europe
References in periodicals archive ?
Robert Laville seemed to be "the best he had been in years" when his family spent time with him after being temporarily released from Lustrum Vale mental health centre in August.
Orla Murphy and her company Figure 8 won the coveted Lustrum Award at the Edinburgh Fringe Festival.
Environment Agency work to reduce the risk of flooding from Lustrum Beck in Stockton is progressing.
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From the discovery of a child's mutilated body, through judicial exe cution and a scandalous trial, Lustrum is a study in the timeless enticements and horrors of power.
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There are currently two flood warnings in place, at the River Seven at Sinnington, North Yorkshire, and Lustrum Beck at Stockton-on-Tees, and 44 flood watches.
Built in 1983, Northumbrian Water's Lustrum Pumping Station, located in Stockton-on-Tees, takes the combined flows from a major retail and industrial area and pumps it to the head of Portrack Wastewater Treatment Works.
A lustrum is nothing more than a seven-letter word, of small importance when compared to the age of the mountains and the Earth, to the stars in the heaven, or to the timeless gods.
Crashing at Gibson's loft on one of his New York visits, Clark was introduced to Robert Frank, who liked his photos enough to encourage a rich young friend--photographer and sometime junkie Danny Seymour--to put up the money for a book on Gibson's Lustrum Press imprint.
The coffee chain has lodged plans with Stockton Council to build the drive-thru in Lustrum Avenue.
Mr Palmer is also registered at Companies House as a director of Full Spec Solutions Ltd of the Lustrum industrial estate in Stockton.