- any of various arched or vaulted structures, as an arching fibrous formation in the brain.
Origin of fornix
1675–85; < Latin: vault, arch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fornix
Fornix, little arched scales in the throat of some corollas, as of Comfrey.The Elements of Botany
These commissures are the anterior commissure, the fornix, and the corpus callosum, the two latter being peculiar to Mammalia.
The corpus callosum is not formed till after the anterior commissure and fornix.
Fornix, for′niks, n. something resembling an arch: an arched formation of the brain.
Frequent allusions to the stench exhaled from the mouth of a fornix are made in the Roman authors.The History of Prostitution
William W. Sanger
- anatomy any archlike structure, esp the arched band of white fibres at the base of the brain
C17: from Latin; see fornicate ²
Word Origin and History for fornix
1680s, from Latin fornix "arch, vaulted chamber" (see fornication).
Online Etymology Dictionary, © 2010 Douglas Harper
- An arch-shaped structure, especially the arch-shaped roof of an anatomical space.
- The compact bundle of white fiber by which the hippocampus of each cerebral hemisphere projects to the opposite hippocampus and to the septum, the anterior nucleus of the thalamus, and the mamillary body.