There are 15 words that start with 'ossi'.
| ossia | ossify |
| ossicle | ossific |
| ossicles | ossified |
| ossifier | ossifies |
| ossicular | ossifiers |
| ossifrage | ossifying |
| ossifrages | ossification |
| ossifications | |
Note: These 15 words that start with 'ossi' are found from the USA & Canada version of the tournament Scrabble word list.