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psilophyton

noun
psi·​loph·​y·​ton | \ sīˈläfəˌtän\

Definition of psilophyton

1 capitalized : a genus (the type of the family Psilophytaceae) of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia
2 plural -s : any plant or fossil of the genus Psilophyton

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History and Etymology for psilophyton

New Latin, from psil- + phyton

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