There are 10 words that end with 'ectal'.
| rectal | tectal | 
| dialectal | prerectal | 
| colorectal | idiolectal | 
| bidialectal | retinotectal | 
| multidialectal | interdialectal | 
Note: These 10 words that end with 'ectal' are found from the USA & Canada version of the tournament Scrabble word list.