There are 13 words that end with 'rax'.
| rax | borax |
| hyrax | storax |
| styrax | thorax |
| anthrax | prothorax |
| mesothorax | metathorax |
| hydrothorax | pneumothorax |
| cephalothorax | |
Note: These 13 words that end with 'rax' are found from the USA & Canada version of the tournament Scrabble word list.