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.

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

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

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

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

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