noun
- plural of costa; ribs or rib-like structures in anatomy or botany
Usage: technical; anatomy; botany
Examples
- The costae of the leaf provide structural support.
- In anatomy, the costae protect the thoracic cavity.
- The insect’s wing showed clearly defined costae.
- Botanists examined the costae pattern in the fern fronds.
- The costae were visible in the X-ray image.