What's the noun for hippodame? Here's the word you're looking for.
hippocampus
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.
“The hippocamp was believed to be a majestic creature, half horse and half fish, dwelling in the deepest depths of the oceans.”
“And, after their application was successful, they got the Hippocamp.”
“But generous readers across the region raised enough money for a life-changing Hippocamp, an all-terrain wheelchair for Elliot, usable on water and compact for aeroplanes.”