There are 16 words that start with 'pian'.
| pian | piano |
| pians | pianic |
| pianos | pianism |
| pianist | pianisms |
| pianists | pianistic |
| pianissimi | pianissimo |
| pianoforte | pianissimos |
| pianofortes | pianistically |
Note: These 16 words that start with 'pian' are found from the USA & Canada version of the tournament Scrabble word list.