出典:Wiktionary
出典:『Wiktionary』 (2025/02/21 18:45 UTC 版)
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. Decennary &c. has no such restriction.
From Medieval Latin decennārius, a variant of decanarius (“containing ten items; related to the number ten”).
decennary (not comparable)
decennary (not comparable)
decennary (plural decennaries)