There are 14 words that start with 'dilata'.
| dilatant | dilatate | 
| dilatable | dilatably | 
| dilatancy | dilatants | 
| dilatator | dilatation | 
| dilatators | dilatancies | 
| dilatations | dilatability | 
| dilatational | dilatabilities | 
Note: These 14 words that start with 'dilata' are found from the USA & Canada version of the tournament Scrabble word list.