Final answer:
The term for a collection of axons connecting one side of the brain to the other is the corpus callosum.
Step-by-step explanation:
The term for a collection of axons connecting one side of the brain to the other is the corpus callosum. It is a thick bundle of neural fibers that allows the left and right hemispheres of the brain to communicate with each other. The corpus callosum connects each point in one hemisphere to its mirror-image point in the opposite hemisphere.