There are 12 words that start with 'mesop'.
| mesophyl | mesopause | mesophyll |
| mesophyls | mesophyte | mesopauses |
| mesophylls | mesophytes | mesophytic |
| mesopelagic | mesophyllic | mesophyllous |
Note: These 12 words that start with 'mesop' are found from the USA & Canada version of the tournament Scrabble word list.