There are 14 words that start with 'dimer'.
| dimer | dimers | 
| dimeric | dimerism | 
| dimerize | dimerous | 
| dimerisms | dimerized | 
| dimerizes | dimerizing | 
| dimercaprol | dimercaprols | 
| dimerization | dimerizations | 
Note: These 14 words that start with 'dimer' are found from the USA & Canada version of the tournament Scrabble word list.