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testacean
[ te-stey-shuhn ]
adjective
, Zoology.
- having a shell or test.
testacean
/ tĕ-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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Word History and Origins
Origin of testacean1
1835–45; < Latin testāce ( us ) shell-covered, testaceous + -an
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