noun, plural en·ne·a·he·dra [en-ee-uh–hee-druh] /ˌɛn i əˈhi drə/.
- a solid figure having nine faces.
noun plural -drons or -dra (-drə)
- a solid figure having nine plane facesSee also polyhedron
noun, plural en·ne·a·he·dra [en-ee-uh–hee-druh] /ˌɛn i əˈhi drə/.
noun plural -drons or -dra (-drə)