Definition from Wiktionary, the free dictionary
See also Hippocampus
hippocampus (plural hippocampi)
- A mythological creature with the front head and forelimbs of a horse and the rear of a dolphin; a hippocamp.
- (anatomy) A part of the brain located inside the temporal lobe, consisting mainly of grey matter. It is a component of the limbic system and plays a role in memory and emotion. So named because of its resemblance to the seahorse.
- (neuroanatomy): HIPP
Derived terms 
Alternative forms 
- a seahorse