volvox

noun

vol·​vox ˈväl-ˌväks 

ˈvȯl-

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

Word History

Etymology

New Latin, from Latin volvere to roll

First Known Use

1798, in the meaning defined above

Kids Definition

volvox

noun

vol·​vox ˈväl-ˌväks 

: any of a genus of single-celled green algae with flagella that form ball-shaped colonies