There are 11 words that start with 'mangan'.
| manganic | manganin | manganate | 
| manganese | manganins | manganite | 
| manganous | manganates | manganeses | 
| manganites | manganesian | |
Note: These 11 words that start with 'mangan' are found from the USA & Canada version of the tournament Scrabble word list.