denticle
/ˈdɛntɪkəl/
noun
- A small tooth or tooth-like structure, especially on the skin of sharks and rays.
- Under a microscope, each denticle on a ray's body has a unique shape.
- The shark's skin is covered in tiny denticles that make it feel rough like sandpaper.
- Scientists study denticles to learn more about ancient fish species.
- A small, pointed, tooth-like projection on a surface or object.
- The metal file had denticles that wore down after years of use.
- The fossil had tiny denticles along the edge of the shell.
- Some plant leaves have denticles that help deter insects.