There are 16 words that end with 'edra'.
| exedra | ephedra |
| exhedra | cathedra |
| trihedra | decahedra |
| hexahedra | octahedra |
| polyhedra | icosahedra |
| pentahedra | tetrahedra |
| dodecahedra | rhombohedra |
| trapezohedra | trisoctahedra |
Note: These 16 words that end with 'edra' are found from the USA & Canada version of the tournament Scrabble word list.