There are 13 words that start with 'rhino'.
| rhino | rhinos | 
| rhinoceri | rhinology | 
| rhinoceros | rhinoscopy | 
| rhinovirus | rhinologies | 
| rhinoplasty | rhinoceroses | 
| rhinoscopies | rhinoviruses | 
| rhinoplasties | |
Note: These 13 words that start with 'rhino' are found from the USA & Canada version of the tournament Scrabble word list.