| Word | Definitions | Synonyms |
|---|---|---|
| axolemma | (noun) outer membrane covering an axon | - |
| axolotl | (noun) larval salamander of mountain lakes of Mexico that usually lives without metamorphosing | Synonyms: Ambystoma mexicanum, mud puppy |
| axon | (noun) long nerve fiber that conducts away from the cell body of the neuron | Synonyms: axone |
| axone | (noun) long nerve fiber that conducts away from the cell body of the neuron | Synonyms: axon |