Arcella

[ahr-sel-uh]

noun

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

Origin of Arcella

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for arcella

Historical Examples of arcella

Dujardin points out very clearly the identity of structure between organisms like Amœbæ and such forms as Difflugia and Arcella.
The Ocean World:
Louis Figuier