01 a. Of or pertaining to shells; consisted of a hard shell, or having a hard shell.
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1.
Of or pertaining to shells; consisted of a hard shell, or having a hard shell.
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2.
Having a dull red brick color or a brownish yellow color.(Bot. & Zool.)
Phrases & compounds
Testaceous animals —
animals having a firm, calcareous shell, as oysters and clams, thus distinguished from crustaceous animals, whose shells are more thin and soft, and consist of several joints, or articulations, as lobsters and crabs.