We found 5 dictionaries that define the word ribbon worms:

General (4 matching dictionaries)

1. ribbon worms: Merriam-Webster
2. ribbon worms: Collins English Dictionary
3. ribbon worms: Wiktionary
4. ribbon worms: TheFreeDictionary.com

Computing (1 matching dictionary)

5. ribbon worms: Encyclopedia

(Note: See ribbon_worm as well.)

Definitions from Wiktionary (ribbon worm) ▸ noun:  Synonym of proboscis worm ▸ Also see ribbon_worm ▸ Words similar to ribbon worms ▸ Usage examples for ribbon worms ▸ Idioms related to ribbon worms ▸ Wikipedia articles (New!) ▸ Words that often appear near ribbon worms ▸ Rhymes of ribbon worms ▸ Invented words related to ribbon worms