noun
- the first segment of the thorax in insects, bearing the first pair of legs
Usage: entomology
Examples
- The beetle’s prothorax was covered in distinctive markings.
- Entomologists examine the prothorax to identify different insect species.
- The prothorax connects the head to the rest of the thorax.
- In many insects, the prothorax is clearly separated from other body segments.
- The shield-like prothorax protected the insect’s vital organs.
- Scientists measured the width of the specimen’s prothorax.