n. (pl. fornices) an arched or vaultlike structure, especially the fornix cerebri, a triangular structure of white matter in the brain, situated between the hippocampus and hypothalamus. The fornix of the vagina is any of three vaulted spaces at the top of the vagina, around the cervix of the uterus. The superior (upper) and inferior (lower) fornices of the conjunctiva are the loose folds of conjunctiva reflected between the posterior aspect of the eyelid and the eyeball.
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