Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
fornix is a noun meaning "generally any arch shaped structure (but often it refers to the arched roof of an anatomical space)". It carries 2 recorded senses.
generally any arch shaped structure (but often it refers to the arched roof of an anatomical space)
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
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fornix come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.