"Axonal" refers to anything related to the axon, which is a long, slender projection of a nerve cell (neuron) that conducts electrical signals away from the cell body.

Here are some examples of how "axonal" is used:

* Axonal transport: The movement of molecules and organelles along the axon.

* Axonal degeneration: The breakdown and death of axons.

* Axonal regeneration: The regrowth of axons after injury.

* Axonal guidance: The process by which axons find their target cells during development.

Essentially, "axonal" indicates that something is involved with or connected to the axon of a neuron.