ˌ ̷ ̷ ̷ ̷ˈkampəs noun
Etymology: New Latin, from Greek hippokampos sea horse, legendary sea monster, from hippo- hipp- + kampos sea monster
1. plural hippocam·pi -mˌpī : a legendary creature with the head and forequarters of a horse and the tail of a dolphin or fish
2. plural hippocampi : a curved elongated ridge extending over the floor of the descending horn of each lateral ventricle of the brain, consisting of gray matter covered on the ventricular surface with white matter, and forming the larger part of the archipallium
3. capitalized : a genus of fishes (family Syngnathidae) consisting of the typical sea horses