Definition of "hippocampi" [hippocampi]

• Plural form of hippocampus. (noun)

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• "Here it lies along the concavity of the hippocampus, on the surface of which some of its fibers are spread out to form the alveus, while the remainder are continued as a narrow white band, the fimbria hippocampi, which is prolonged into the uncus of the hippocampal gyrus."
• "The portions of Claire's brain most damaged by the virus are known as the hippocampi, two deep, seahorse-shaped structures where new memories are formed and others are retrieved."
• "The AMA study discovered that 14- to 21-year-olds who abused alcohol had "about 10 percent smaller hippocampi" -- where the brain learns and remembers -- and that the harm might be irreversible."