There are 9 words that start with 'stront'.
| strontia | strontic | 
| strontian | strontias | 
| strontium | strontians | 
| strontiums | strontianite | 
| strontianites | |
Note: These 9 words that start with 'stront' are found from the USA & Canada version of the tournament Scrabble word list.