H0155500 (hĕp′tə-hē′drən)n.pl.hep·ta·he·drons or hep·ta·he·dra(-drə) A polyhedron with seven faces.hep′ta·he′dral(-drəl) adj.
heptahedron
(ˌhɛptəˈhiːdrən) n, pl-dronsor-dra (-drə) (Mathematics) a solid figure having seven plane faces. See also polyhedronˌheptaˈhedraladjTranslationsгептаэдрсемигранник
heptahedron
heptahedron
[‚hep·tə′hē·drən] (mathematics) A polyhedron with seven faces.