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fornix

Pronunciation: /ˈfɔːnɪks/

Definition of fornix

noun (plural fornices /ˈfɔːnɪsiːz/)

Anatomy

a vaulted or arched structure in the body, in particular:
(also fornix cerebri /ˈsɛrɪbrʌɪ/) a triangular area of white matter in the mammalian brain between the hippocampus and the hypothalamus.