Etymology of the Latin word decennium
the Latin word
decennium (period of ten years; festival)
derived from the Latin word
decem (ten)
derived from the Proto-Indo-European root
*dekm₀derived from the Latin word
annus (year; age)
derived from the Proto-Indo-European root
*at-Derivations in other languages
English
decennium, English
decennial, Italian
decennio, Portuguese
decênio, Romanian
deceniu, Spanish
decenio
