testacean

American  

[te-stey-shuhn] / tɛˈsteɪ ʃən /

adjective

Zoology.

1. having a shell or test.

---

testacean Scientific  

/ tĕ-stā′shən /

1. 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.

---

Etymology

Origin of testacean

1835–45; < Latin testāce ( us ) shell-covered, testaceous + -an