There are 16 words that start with 'emuls'.
| emulsify | emulsion | 
| emulsive | emulsoid | 
| emulsible | emulsions | 
| emulsoids | emulsified | 
| emulsifier | emulsifies | 
| emulsoidal | emulsifiers | 
| emulsifying | emulsifiable | 
| emulsification | emulsifications | 
Note: These 16 words that start with 'emuls' are found from the USA & Canada version of the tournament Scrabble word list.