We found 17 dictionaries that define the word prothallium:

General (14 matching dictionaries)

1. prothallium: Merriam-Webster
2. prothallium: Collins English Dictionary
3. prothallium: Wordnik
4. prothallium: Wiktionary
5. prothallium: Webster's New World College Dictionary, 4th Ed.
6. prothallium: The Wordsmyth English Dictionary-Thesaurus
7. prothallium: Infoplease Dictionary
8. Prothallium, prothallium: Dictionary.com
9. Prothallium: Wikipedia, the Free Encyclopedia
10. Prothallium: Online Plain Text English Dictionary
11. prothallium: Webster's Revised Unabridged, 1913 Edition
12. Prothallium: AllWords.com Multi-Lingual Dictionary
13. prothallium: FreeDictionary.org
14. Prothallium: TheFreeDictionary.com

Computing (1 matching dictionary)

15. prothallium: Encyclopedia

Medicine (1 matching dictionary)

16. online medical dictionary (No longer online)

Science (1 matching dictionary)

17. Botanical Terms (No longer online)

(Note: See prothallia as well.)

Definitions from Wiktionary (prothallium) ▸ noun:  A plant, usually a pteridophyte, in gametophyte stage in the metagenesis cycle. ▸ noun:  The young gametophyte of a liverwort or peat moss. Similar: prothallus, gametophyte, pteridophyte, proembryo, protonema, gametangiophore, gamophyte, gametophore, megagametophyte, sporophyte, more... Opposite: sporophyte, gametophyte, adult phase Adjectives: female, male, young, same, mature, green, small, rudimentary, older, large, developed ▸ Words similar to prothallium ▸ Usage examples for prothallium ▸ Idioms related to prothallium ▸ Wikipedia articles (New!) ▸ Popular adjectives describing prothallium ▸ Words that often appear near prothallium ▸ Rhymes of prothallium ▸ Invented words related to prothallium