heptahedron definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- heptahedral adjective
heptahedron definition by American Heritage Dictionary
noun pl. hep·ta·he·drons or hep·ta·he·dra
A polyhedron with seven faces.
- hepˌta·heˈdral adjective