Words That Rhyme With "Pentahedron" :
2 syllables:
breeden, creeden, Edam, Eden, Edom, freedom, Friedan, frieden, Kidron, leedom, Needham, squadron, stridden, sweden, weeden
3 syllables:
ephedrine, trihedron, unridden
4 syllables:
boustrophedon, decahedron, hexahedron, octahedron, polyhedron, rhombohedron, tetrahedron
5 syllables:
dodecahedron, icosahedron, pseudoephedrine, scalenohedron, trisoctahedron