We found 4 dictionaries that define the word centuries-old:

General (4 matching dictionaries)

1. centuries-old, centuries-old: Collins English Dictionary
2. Centuries-old, centuries-old: Wordnik
3. centuries-old: TheFreeDictionary.com
4. centuries-old: Wiktionary

Definitions from Wiktionary (centuries-old) ▸ adjective:  Hundreds of years old. ▸ Words similar to centuries-old ▸ Usage examples for centuries-old ▸ Idioms related to centuries-old ▸ Wikipedia articles (New!) ▸ Popular nouns described by centuries-old ▸ Words that often appear near centuries-old ▸ Rhymes of centuries-old ▸ Invented words related to centuries-old