protonema
pro·to·ne·ma
noun \ˌprō-tə-ˈnē-mə\ plural pro·to·ne·ma·ta\-ˈnē-mə-tə, -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
— pro·to·ne·mal \-ˈnē-məl\ adjective
— pro·to·ne·ma·tal \-ˈnē-mə-təl, -ˈne-\ adjective
Origin of PROTONEMA
New Latin protonemat-, protonema, from prot- + Greek nēma thread — more at nemat-
First Known Use: 1857
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