Definition of lustrum in English:

lustrum

Line breaks: lus|trum
Pronunciation: /ˈlʌstrəm
 
/

noun (plural lustra /-trə/ or lustrums)

chiefly • literary or • historical
  • A period of five years.
    More example sentences
    • The book is dedicated to Nygren's wife Irmgard "in thankfulness for seven lustrums of theological cooperation."
    • 37 years ago my first secretary was a lady who has remained my friend for nearly 8 lustrums (4 decades) and today is a leading lady lawyer in Los Angeles who has never lost a case in court.

Origin

late 16th century: from Latin, originally denoting a purificatory sacrifice after a quinquennial census.

More definitions of lustrum

Definition of lustrum in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day kerf
Pronunciation: kəːf
noun
a slit made by cutting with a saw