1. the third and posterior segment of the thorax in insects
Usage: entomology

Examples

• The metathorax bears the third pair of legs in most insects.
• Wings are typically attached to the mesothorax and metathorax.
• The beetle’s metathorax was clearly visible under the microscope.
• Entomologists study the metathorax to understand insect locomotion.
• The metathorax contains important flight muscles in flying insects.
• Each segment of the thorax, including the metathorax, has distinct characteristics.