hendecahedron

noun, plural hen·dec·a·he·drons, hen·dec·a·he·dra [hen-dek-uh–hee-druh, hen-dek-] /hɛnˌdɛk əˈhi drə, ˌhɛn dɛk-/.

1. a solid figure having 11 faces.

noun plural -drons or -dra (-drə)

1. a solid figure having 11 plane facesSee also polyhedron