euglena
/juːˈɡliːnə
/noun Biology
A green single-celled freshwater organism with a flagellum, sometimes forming a green scum on stagnant water.
- Genus Euglena, division Euglenophyta (or phylum Euglenophyta, kingdom Protista).
Origin
Modern Latin, from eu- 'well' + Greek glēnē 'eyeball, socket of joint'.