pro·​thal·​li·​um prō-ˈtha-lē-əm How to pronounce prothallium (audio)
plural prothallia prō-ˈtha-lē-ə How to pronounce prothallium (audio)

Word History


New Latin, from pro- + thallus

First Known Use

1858, in the meaning defined above

Time Traveler
The first known use of prothallium was in 1858

Dictionary Entries Near prothallium

Cite this Entry

“Prothallium.” Dictionary, Merriam-Webster, Accessed 14 Jul. 2024.

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