There are 8 words that start with 'lithot'.
| lithotomy | lithotomies | 
| lithotripsy | lithotripter | 
| lithotriptor | lithotripsies | 
| lithotripters | lithotriptors | 
Note: These 8 words that start with 'lithot' are found from the USA & Canada version of the tournament Scrabble word list.