adjective
- of, relating to, or having an endoskeleton (an internal skeleton, as in vertebrates)
Usage: biology; comparative anatomy
Examples
- Humans are endoskeletal animals with bones that support their bodies from within.
- Fish and mammals are both endoskeletal vertebrates.
- The endoskeletal structure of birds allows them to be lightweight yet strong.
- Unlike insects with exoskeletons, endoskeletal creatures have internal bone frameworks.
- Endoskeletal support systems evolved in early vertebrates millions of years ago.