decenniad
English
Etymology
From (deprecated template usage) [etyl] Latin decennium (“a period of ten years”) + -ad.[1]
Noun
decenniad (plural decenniads)
Usage notes
Although decade may be taken as any group of ten years, it is commonly restricted to the informal ten-year periods of the calendar whose last digits run from 0 to 9. Decenniad &c. has no such restriction.
Synonyms
- See decennium
References
- ^ Oxford English Dictionary, 1st ed. "decenniad, n." Oxford University Press (Oxford), 1894.