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arcella

noun ar·cel·la \ ärˈselə \
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Definition of arcella

1 capitalized : the type genus of Arcellidae comprising protozoans resembling amoebas and provided with a chitinous shell suggesting an umbrella
2 plural -s : a protozoan of the genus Arcella

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Origin and Etymology of arcella

New Latin, from Latin arca box, chest + New Latin -ella

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