There are 12 words that start with 'silici'.
| silicic | silicide | 
| silicify | silicium | 
| silicides | silicious | 
| siliciums | silicified | 
| silicifies | silicifying | 
| silicification | silicifications | 
Note: These 12 words that start with 'silici' are found from the USA & Canada version of the tournament Scrabble word list.