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volvox

noun
vol·​vox | \ˈväl-ˌväks, ˈvȯl-\

Definition of volvox 

: any of a genus (Volvox) of flagellated unicellular green algae that form spherical colonies

First Known Use of volvox

1798, in the meaning defined above

History and Etymology for volvox

New Latin, from Latin volvere to roll

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The first known use of volvox was in 1798

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