protonema

noun
pro·​to·​ne·​ma | \ ˌprō-tə-ˈnē-mə How to pronounce protonema (audio) \
plural protonemata\ ˌprō-​tə-​ˈnē-​mə-​tə How to pronounce protonema (audio) , -​ˈne-​ \

Definition of protonema

: the primary usually filamentous thalloid stage of the gametophyte in mosses and in some liverworts comparable to the prothallus in ferns

Other Words from protonema

protonemal \ ˌprō-​tə-​ˈnē-​məl How to pronounce protonema (audio) \ adjective
protonematal \ ˌprō-​tə-​ˈnē-​mə-​tᵊl How to pronounce protonema (audio) , -​ˈne-​ How to pronounce protonema (audio) \ adjective

First Known Use of protonema

1857, in the meaning defined above

History and Etymology for protonema

New Latin protonemat-, protonema, from prot- + Greek nēma thread — more at nemat-

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Time Traveler for protonema

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The first known use of protonema was in 1857

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Dictionary Entries Near protonema

protonate

protonema

Protonemertini

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Cite this Entry

“Protonema.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protonema. Accessed 26 Jun. 2022.

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More from Merriam-Webster on protonema

Britannica.com: Encyclopedia article about protonema

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