There are 47 12-letter words that start with 'photo'.
Note: These 47 12-letter words that start with 'photo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with photos, photoc, photog, photop, photom, photot, photoe, photor, photod, photoi, photol, photof, photoo, photob, photon, photok, photoa, photoj, photov.
6-letter words start with 'photo' (3)