lustrum
lus·trum/ˈlʌstɹəm/noun
lustrum is spelled L-U-S-T-R-U-M: 7 letters and 2 syllables (lus·trum). It appears about once in every 38 million words in written English, the 189,524th most frequent word form (wordfreq, 2021 data). As a noun, lustrum means “A lustration: a ceremonial purification of the people of Rome performed every five years after the census” (English Wiktionary, September 2026). The plural of lustrum is lustra or lustrums.
How many letters and syllables are in lustrum?
| Letters | 7: L-U-S-T-R-U-M |
|---|---|
| Syllables | 2: lus·trum |
| In writing | about once in every 38 million words; the 189,524th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is lustrum?
Lustrum appears about once in every 38 million words in written English, the 189,524th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce lustrum?
- US /ˈlʌstɹəm/
Lustrum has 2 syllables, split lus·trum in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-lustrum.wav, Wikimedia Commons (author and licence on each file's page).
Forms of lustrum
- lustra plural
- lustrums plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does lustrum mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A lustration: a ceremonial purification of the people of Rome performed every five years after the census.
- 2
Synonym of quinquennium: Any 5-year period.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Lustrum in Spanish, French, German and Portuguese
In the sense ceremonial purification of all the people – see also lustration:
| Language | Words |
|---|---|
| French | lustre |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does lustrum come from?
From Latin lūstrum.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).