AskDefine | Define fornix

Dictionary Definition



1 generally any arch shaped structure (but often it refers to the arched roof of an anatomical space)
2 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 [syn: trigonum cerebrale] [also: fornices (pl)]

User Contributed Dictionary



  1. An archlike structure or fold.
  2. Specifically, the arched bundle of fibres or axons at the base of the brain.

Extensive Definition

Fornix ("arch") can refer to:
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