noun. plural, hippocampi

In anatomy, the hippocampus is an elongated ridge of the brain, found in each lateral ventricle (and shaped a bit like a seahorse or whale). Its function is believed to be the center of emotion, memory, and the involuntary actions of the nervous system.
People with Alzheimer's disease are shown to have damage to their hippocampus, which leads to memory loss and disorientation.

Humans have two hippocampi, one of each side of the brain.
by Christina S January 4, 2012
A school specially designed for hippopotamuses.
I went to the hippocampus instead of the zoo.
by deewen December 3, 2019
hippocampus: Virtually any college or university campus in Mississippi, Alabama or Tennessee, where over 30% of the student body is significantly obese.
"Dude, it was like an entire university campus of sumo wrestlers! I couldn't believe the amount of morbidly obese 20-year olds cruising the hippocampus on mobility scooters."
by Mo Dixley November 15, 2009
"I'm off to my hippocampus"
by Leroy August 13, 2004
Where african water animals go to get their education.
It's actually the memory processing center of the Lymbic system in the brain. Hippocampus
by MrLongley November 5, 2012
A creature that is half-horse with a fish tail.
Octopus --> octopi
Cactus --> cacti
Hippocampus --> hippocampi
by Mooch316 January 6, 2012
A word pertaining to universities in the southeastern region of the US where quite a large population of the university is horridly obese.
"-____- I can't believe I decided to go to UTK, the whole 200 mile radius is a Hippocampus."
by Magikaru Fish! January 4, 2012