There are 13 words that start with 'gaso'.
| gasohol | gasogene | gasohols |
| gasolene | gasolier | gasoline |
| gasogenes | gasolenes | gasoliers |
| gasolines | gasolinic | gasometer |
| gasometers | ||
Note: These 13 words that start with 'gaso' are found from the USA & Canada version of the tournament Scrabble word list.