Arcella

[ ahr-sel-uh ]

noun

1. a genus of freshwater, ameboid protozoa that secrete a hard, umbrellalike shell having a single opening through which the pseudopodia extend.

Word History and Origins

Origin of Arcella¹

1838; < New Latin, equivalent to Latin arc ( a ) a chest, box + -ella diminutive suffix

Example Sentences

Dujardin points out very clearly the identity of structure between organisms like Amœbæ and such forms as Difflugia and Arcella.

From Project Gutenberg