Daily Almanac for
Nov 28, 2009
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Ar•cel•la



Pronunciation: (är-sel'u), [key]
n.
a genus of freshwater, ameboid protozoa that secrete a hard, umbrellalike shell having a single opening through which the pseudopodia extend.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

ArceArcesilaus
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