What is another word for lustrum?
Pronunciation: [lˈʌstɹəm] (IPA) 
Lustrum is a word used to designate a period of five years. However, there are several synonyms that can be used to describe the same time frame. For instance, quinquennium, which combines the Latin word for five, quinque, with the word for year, annus, to form a term that literally means a period of five years. Another synonym for lustrum is pentad, which stems from the Greek word pente and represents a set or group of five. Additionally, half a decade is also a common way to refer to a lustrum. Whether it's lustrum, quinquennium, pentad or half a decade, these words all describe the same period of five years.
