Definition of testaceous in English:

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Pronunciation: /teˈstāSHəs/


chiefly Entomology
Of a dull brick-red color.
Example sentences
  • The three specimens in the UNIMAS Collection examined slightly varied in the coloration of tibiae from dark testaceous to fulvous, two specimens have a yellowish femora and darker brownish tibiae.
  • The specimen before me has the same part of a dull testaceous color, being not at all conspicuous and in feeble contrast with the black ground color.


Mid 17th century: from Latin testaceus (from testa 'tile') + -ous.

For editors and proofreaders

Syllabification: tes·ta·ceous

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