There are 11 words that start with 'retino'.
| retinol | retinoid |
| retinols | retinoids |
| retinopathy | retinoscopy |
| retinotectal | retinopathies |
| retinoscopies | retinoblastoma |
| retinoblastomas | |
Note: These 11 words that start with 'retino' are found from the USA & Canada version of the tournament Scrabble word list.