noun
- plural of octahedron; three-dimensional geometric shapes with eight triangular faces
Usage: geometry; mathematics
Examples
- The chemistry student built models of octahedrons to understand molecular geometry.
- Diamond crystals often form as octahedrons in nature.
- The math teacher showed the class how to calculate the volume of octahedrons.
- Regular octahedrons have eight equilateral triangular faces.
- The mineral collection included several octahedrons of fluorite.
- Students learned to identify octahedrons among other polyhedra.