Term: brain white matter
Name: brain
Synonyms: brain structure
Definition: Cavitated compound organ which is comprised of gray and white matter and surrounds the cerebral ventricular system.
Ontology: Anatomy Ontology [ZFA:0000008]

Name: white matter
Synonyms: CNS tract/commissure, CNS white matter, white mater
Definition: Multi-tissue structure comprised largely of myelinated axons.
Ontology: Anatomy Ontology [ZFA:0001682]