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.
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Tes·ta·cea. teˈstāsh(ē)ə : an order of Rhizopoda containing forms (as of the genera Arcella and Difflugia) with an external test.
a former group of shelled molluscs and other invertebrates, created by Linnaeus and roughly corresponding to the colloquial term seashell (see Vermes). a ...
2 senses: 1. any of various invertebrate animals with a hard shell 2. (of an invertebrate) having a hard shell.... Click for more definitions.
(zoology) One of the rhizopods in Testacea. Part or all of this entry has been imported ...
testacea is a borrowing from Latin. Etymons: Latin testāceus. See etymology. Nearby entries.
1. : having a shell. a testaceous protozoan. 2. : of any of the several light colors of bricks.
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adjective · of, relating to, or derived from shells. · having a test or shell-like covering. · of a brick-red, brownish-red, or brownish-yellow color.
There are two meanings listed in OED's entry for the word testacean. See 'Meaning & use' for definitions, usage, and quotation evidence. testacean has developed ...
any of various rhizopods of the order Testacea characterized by having a shell. see moresee less. type of: rhizopod, rhizopodan.