hip·po·cam·pus

[hip-uh-kam-puhs]
noun, plural hip·po·cam·pi [-pahy, -pee] .
1.
Classical Mythology. a sea horse with two forefeet, and a body ending in the tail of a dolphin or fish.
2.
Anatomy. an enfolding of cerebral cortex into the lateral fissure of a cerebral hemisphere, having the shape in cross section of a sea horse.

Origin:
1600–10; < Latin < Greek hippókampos, equivalent to hippo- hippo- + kámpos sea monster

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World English Dictionary
hippocampus (ˌhɪpəʊˈkæmpəs) [Click for IPA pronunciation guide]
 
n , pl -pi
1.  a mythological sea creature with the forelegs of a horse and the tail of a fish
2.  See sea horse any marine teleost fish of the genus Hippocampus, having a horselike head
3.  an area of cerebral cortex that forms a ridge in the floor of the lateral ventricle of the brain, which in cross section has the shape of a sea horse. It functions as part of the limbic system
 
[C16: from Latin, from Greek hippos horse + kampos a sea monster]
 
hippo'campal
 
adj

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00:10
Hippocampus is always a great word to know.
So is faun. Does it mean:
the beautiful daughter of Zeus and Leda and wife of Menelaus whose abduction by Paris was the cause of the Trojan War
one of a class of rural deities represented as men with the ears, horns, tail, and later also the hind legs of a goat
American Heritage
Medical Dictionary

hippocampus hip·po·cam·pus (hĭp'ə-kām'pəs)
n. pl hip·po·cam·pi (-pī')
The complex, internally convoluted structure that forms the medial margin of the cortical mantle of the cerebral hemisphere, borders the choroid fissure of the lateral ventricle, is composed of two gyri with their white matter, and forms part of the limbic system.


hip'po·cam'pal (-pəl) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
hippocampus   (hĭp'ə-kām'pəs)  Pronunciation Key 
Plural hippocampi (hĭp'ə-kām'pī')
A convoluted, seahorse-shaped structure in the cerebral cortex of the temporal lobe of the brain, composed of two gyri with white matter above gray matter. It forms part of the limbic system and is involved in the processing of emotions and memory.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The authors then examined how well those two factors correlated with the size
  of a participant's amygdala and hippocampus.
These regions, which included the right posterior hippocampus, are known to be
  involved in visual memory and spatial navigation.
These areas included the hippocampus and the amygdala, parts of the brain
  crucial for memory and emotion.
Similarly, after the animals were given electric shocks, levels of the compound
  clearly went up in the hippocampus.
Images for hippocampus
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