Definitions
from The Century Dictionary.
- A family of Protozoa, of the order Amœboidea, containing the genera Arcella, Difflugia, etc., the members of which are inclosed in a kind of test.
from the GNU version of the Collaborative International Dictionary of English.
- proper noun A natural family of soil and freshwater protozoa; cosmopolitan.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun soil and freshwater protozoa; cosmopolitan in distribution
Etymologies
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Examples
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Professor Claus has looked at this latter organism, and thinks that it is the shell of a rhizopod, probably one of the Arcellidae.
Insectivorous Plants Charles Darwin 1845
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