pentahedron

penta- +‎ -hedron

• IPA^(key): /ˌpɛntaˈhiːdɹən/
• Rhymes: -iːdɹən

pentahedron (plural pentahedrons or pentahedra)

1. (geometry) A polyhedron with five faces.
   • 2017, Mohsin Hamid, Exit West, Hamish Hamilton, page 106:

     Their tent was too small for them to stand, a long but low pentahedron, in shape like the triangular glass prism Saeed used to have as a child, with which he would refract sunlight into little rainbows.

• pentahedral