Definition of fornix in English:


Syllabification: for·nix
Pronunciation: /ˈfôrniks

noun (plural fornices /-nəˌsēz/)

  • 1A vaulted or arched structure in the body, in particular.
    More example sentences
    • The fornices should be palpated around the cervix for nodules suggestive of endometriosis, and may also be the etiology for fixed adnexa or may result from pelvic inflammatory disease.
    • The lateral fornices may be lavaged without manipulation by directing the stream into them.
    • Excessively large implants may also compromise the fornices and possibly limit motility.
  • 1.1 (also fornix cerebri /ˈserəˌbrī, ˈkerəˌbrē/) A triangular area of white matter in the mammalian brain between the hippocampus and the hypothalamus.
    More example sentences
    • The septum pellucidum stretches across the interval between the genu of the corpus collosum and the columns of the fornix, separating the frontal horns of the two lateral ventricles.
    • Between the two crura of the fornix is a white, triangular lamina, known as the fornical commissure.
    • The fornix, mamillary bodies, and part of the anterior commissure can also be seen.


late 17th century: from Latin, literally 'arch, vaulted chamber'.

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