noun
- a bone in the front part of the upper jaw of vertebrates that bears the incisor teeth
Usage: anatomy
Examples
- The premaxilla forms the front portion of the upper jaw in most mammals.
- In birds, the premaxilla is part of the beak structure.
- The fossil showed a well-preserved premaxilla with intact tooth sockets.
- Reptiles have a distinct premaxilla that can be seen in skull examinations.
- The premaxilla connects to the maxilla to form the complete upper jaw.
- Anatomists study the premaxilla to understand jaw development in vertebrates.