- fornix, trigonum cerebrale - 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
--1 is a kind of fiber bundle, fibre bundle, fascicle, fasciculus
--1 is a part of limbic system, visceral brain, limbic brain
--1 has parts: carina fornicis