There are 10 words that start with 'mesoth'.
| mesothelia | mesothorax |
| mesothelial | mesothelium |
| mesothelioma | mesothoraces |
| mesothoracic | mesothoraxes |
| mesotheliomas | mesotheliomata |
Note: These 10 words that start with 'mesoth' are found from the USA & Canada version of the tournament Scrabble word list.