There are 10 words that start with 'triso'.
| trisome | trisomy |
| trisomes | trisomic |
| trisodium | trisomics |
| trisomies | trisoctahedra |
| trisoctahedron | trisoctahedrons |
Note: These 10 words that start with 'triso' are found from the USA & Canada version of the tournament Scrabble word list.