Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

decennium

play
noun, de·cen·ni·um \-nē-əm\

Definition of decennium

plural decenniums or -nia \-nē-ə\

  1. :  a period of 10 years :  decade



Origin of decennium

Latin, from decem + annus year — more at annual


First Known Use: 1685

Rhymes with decennium


Seen and Heard

What made you want to look up decennium? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the range of perception or understanding

Get Word of the Day daily email!