1. [ noun ] generally any arch shaped structure (but often it refers to the arched roof of an anatomical space)
Related terms: body_part
2. [ noun ] (anatomy,zoology) an arched bundle of white fibers at the base of the brain by which the hippocampus of each hemisphere projects to the contralateral hippocampus and to the thalamus and mamillary bodies
Synonyms: trigonum_cerebrale
Related terms: fiber_bundle brain limbic_system carina_fornicis
Similar spelling:   fornax