There are 13 words that end with 'ameter'.
| diameter | decameter | 
| dekameter | dynameter | 
| hexameter | octameter | 
| rotameter | parameter | 
| heptameter | pentameter | 
| tetrameter | semidiameter | 
| multiparameter | |
Note: These 13 words that end with 'ameter' are found from the USA & Canada version of the tournament Scrabble word list.