There are 8 13-letter words that start with 'por'.
| porcelainized | porcelainizes | 
| porcelainlike | porcellaneous | 
| pornographers | pornographies | 
| porphyropsins | portabilities | 
Note: These 8 13-letter words that start with 'por' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with port, porc, pork, porp, porn, poro, pori, porr, pore, porb, porg.
4-letter words start with 'por' (4)