We found 11 dictionaries that define the word decennia:

General (11 matching dictionaries)

1. decennia: Merriam-Webster
2. decennia: Oxford Learner's Dictionaries
3. decennia: American Heritage Dictionary of the English Language
4. decennia: Collins English Dictionary
5. decennia: Vocabulary.com
6. decennia: Wiktionary
7. Decennia, decennia: Dictionary.com
8. Decennia: Online Plain Text English Dictionary
9. Decennia: AllWords.com Multi-Lingual Dictionary
10. decennia: FreeDictionary.org
11. decennia: TheFreeDictionary.com

(Note: See decennium as well.)

Definitions from Wiktionary (decennium) ▸ noun:  Synonym of decade: a ten year period. ▸ Also see decennium ▸ Words similar to decennia ▸ Usage examples for decennia ▸ Idioms related to decennia ▸ Wikipedia articles (New!) ▸ Popular adjectives describing decennia ▸ Words that often appear near decennia ▸ Rhymes of decennia ▸ Invented words related to decennia