There are 15 words that start with 'axo'.
| axon | axone | axons |
| axonal | axones | axonic |
| axolotl | axoneme | axolotls |
| axonemal | axonemes | axoplasm |
| axoplasms | axoplasmic | axonometric |
Note: These 15 words that start with 'axo' are found from the USA & Canada version of the tournament Scrabble word list.