Testacean
adjective, Zoology.
1.
having a shell or test.
testacean
(tě-stā’shən)
Any of various protozoans of the order Arcellinida (or Testacida) that are encased in a shell. Testaceans are rhizopods and are related to amoebas. Their shell usually has one chamber and may be secreted by the organism as a chitinous or siliceous covering, or may be glued together out of sand particles.
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