Definition of Fornix

1. Noun. Generally any arch shaped structure (but often it refers to the arched roof of an anatomical space).

Generic synonyms: Body Part

2. Noun. 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.
Exact synonyms: Trigonum Cerebrale
Terms within: Carina Fornicis
Generic synonyms: Fascicle, Fasciculus, Fiber Bundle, Fibre Bundle
Group relationships: Limbic Brain, Limbic System, Visceral Brain

Definition of Fornix

1. n. An arch or fold; as, the fornix, or vault, of the cranium; the fornix, or reflection, of the conjuctiva.

Definition of Fornix

1. Noun. (anatomy) An archlike structure or fold. ¹

2. Noun. (anatomy) Specifically, the arched bundle of fibres or axons at the base of the brain. ¹

¹ Source:

Definition of Fornix

1. an arched anatomical structure [n -NICES] : FORNICAL [adj]

Medical Definition of Fornix

1. Origin: L, an arch. An arch or fold; as, the fornix, or vault, of the cranium; the fornix, or reflection, of the conjuctiva. Esp, two longitudinal bands of white nervous tissue beneath the lateral ventricles of the brain. Source: Websters Dictionary (01 Mar 1998)

Fornix Pictures

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Lexicographical Neighbors of Fornix

fornix (current term)
fornix conjunctivae
fornix of the lacrimal sac
fornix pharyngis
fornix sacci lacrimalis

Literary usage of Fornix

Below you will find example usage of this term as found in modern and/or classical literature:

1. Anatomy, Descriptive and Surgical by Henry Gray (1893)
"The fornix (Figs. 425, 431) is a longitudinal lamella of white fibrous matter ... The body of the fornix is triangular ; narrow in front, broad behind. ..."

2. Anatomy: Descriptive and Surgical by Henry Gray, Thomas Pickering Pick (1897)
"fornix.—The next point to be noted is the absolute approximation of the two frontal and of the "upper regions" of the inner aspects of the two parietal ..."

3. Anatomy of the Cat by Jacob Ellsworth Reighard, Herbert Spencer Jennings (1901)
"The fornix (Fig. 148, a; Fig. 143, it, :•; Figs. 150-152, consists of an arched tract of longitudinal fibres near the medi border of each hemisphere, ..."

4. Quain's Elements of Anatomy by Jones Quain, Edward Albert Sharpey-Schäfer, George Dancer Thane, Johnson Symington (1893)
"It occupies the interval between thn corpus callosum above and in front, and the anterior part of the fornix behind (fig. 91) ; and gradually tapers ..."

5. Principles of Physiological Psychology by Wilhelm Max Wundt (1904)
"(b)—fornix and Commissural System At the anterior extremity of the primitive aula, the two hemispheres grow together in the middle line. ..."

6. A Text Book of Physiology by Michael Foster (1893)
"The disposition of the fornix or ventral portion of the junction is verv different. At its apex in front the fornix bifurcates into two bauds, ..."

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