1. having a hard shell or shell-like covering
Usage: technical; biology
2. of a brick-red or brownish-orange color
Usage: formal; descriptive

Examples

• The testaceous creatures scuttled across the ocean floor.
• Lobsters and crabs are testaceous animals with protective shells.
• The pottery had a beautiful testaceous glaze.
• The testaceous hue of the autumn leaves was striking.
• Many testaceous mollusks can be found in tidal pools.
• The artist mixed pigments to achieve a testaceous color.