1. hippocampus, neural structure

usage: a complex neural structure (shaped like a sea horse) consisting of grey matter and located on the floor of each lateral ventricle; intimately involved in motivation and emotion as part of the limbic system; has a central role in the formation of memories

2. Hippocampus, genus Hippocampus, fish genus

usage: seahorses

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See also: hippocampus (Dictionary)