brain white matter

http://purl.obolibrary.org/obo/UBERON_0003544

The regions of the brain that are largely or entirely composed of myelinated nerve cell axons and contain few or no neural cell bodies or dendrites. [ MP:0008026 ]

Synonyms: white substance of brain, brain white matter of neuraxis, white matter of brain, brain white substance, white matter of neuraxis of brain