Definitions

1. noun

A polyhedron with 10 faces; a solid object with 10 flat sides, typically formed by the intersection of 10 planes.

“The artist used a decahedron as a model to create a unique sculpture.”

2. noun

A molecule or complex ion with 10 atoms; an atom or group of atoms with 10 valence electrons.

“The chemist studied the structure of a decahedron molecule and its unique bonding properties.”