Term: optic chiasm anatomical region
Name: optic chiasm
Synonyms: chiasma opticum, optic commissure
Definition: Decussation of cranial nerve II axons whereby the retinal axons cross the midline, projecting contralaterally through the optic tract.
Ontology: Anatomy Ontology [ZFA:0000556]

Name: anatomical region
Synonyms:
Definition: A 3D region in space without well-defined compartmental boundaries; for example, the dorsal region of an ectoderm.
Ontology: Spatial Ontology [BSPO:0000070]