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testaceous

[te-stey-shuh s]
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adjective
  1. of, relating to, or derived from shells.
  2. having a test or shell-like covering.
  3. of a brick-red, brownish-red, or brownish-yellow color.

Origin of testaceous

1640–50; < Latin testāceus shell-covered, equivalent to test(a) (see test2) + -āceus -aceous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for testaceous

testaceous

adjective biology
  1. of, relating to, or possessing a test or testa
  2. of the reddish-brown colour of terra cotta

Word Origin

C17: from Latin testācens, from testa
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012