We found 7 dictionaries that define the word protostomes:

General (6 matching dictionaries)

1. protostomes: Merriam-Webster
2. protostomes: Collins English Dictionary
3. protostomes: Wiktionary
4. protostomes: Dictionary.com
5. Protostomes: Wikipedia, the Free Encyclopedia
6. Protostomes: TheFreeDictionary.com

Science (1 matching dictionary)

7. On-Line Biology Book: GLOSSARY (No longer online)

Opposite: deuterostomes, bilateral symmetry ▸ Words similar to protostomes ▸ Usage examples for protostomes ▸ Idioms related to protostomes ▸ Wikipedia articles (New!) ▸ Words that often appear near protostomes ▸ Rhymes of protostomes ▸ Invented words related to protostomes