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

“I’ve thought about closing,” said Ms. Arcella, shaking her head disapprovingly at Mr. Macri’s economic policies.

From Wall Street Journal

Ms. Arcella said her electricity bill has risen 10-fold since Mr. Macri began cutting subsidies in 2016.

From Wall Street Journal

But like most testate amoebae, species of Arcella are hard to tell apart.

From Scientific American

A close relative, Arcella brasiliensis, was already known, but has more of a brimmed beanie thing going on.

From Scientific American

It is Arcella gandalfi, a new South American shelled amoeba.

From Scientific American