hippocampus
noun
hip·po·cam·pus
ˌhi-pə-ˈkam-pəs 
plural hippocampi
ˌhi-pə-ˈkam-ˌpī
-(ˌ)pē
-(ˌ)pē
: a curved elongated ridge that extends over the floor of the descending horn of each lateral ventricle of the brain, that consists of gray matter covered on the ventricular surface with white matter, and that is involved in forming, storing, and processing memory
Examples of hippocampus in a Sentence
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In the original visual, the Grammy winner plays a heartbroken character named Peaches who has all traces of her ex wiped from her hippocampus, an homage to Michel Gondry’s 2004 film Eternal Sunshine of the Spotless Mind.
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Hannah Dailey, Billboard, 26 Mar. 2025
Researchers long thought that the hippocampus, the region of the brain that’s in charge of making memories, wasn’t developed enough during infancy to encode specific events as memories.
—Sam Walters, Discover Magazine, 20 Mar. 2025
From the hippocampus, a crucial memory hub, to the vast neural networks in our cortex, the brain continuously forms new connections.
—Talia Milgrom-Elcott, Forbes, 13 Mar. 2025
Older adults who’ve suffered falls have a smaller hippocampus, a brain region that helps with spatial navigation, than those who avoid falling.
—Matt Fuchs, TIME, 7 Mar. 2025
See All Example Sentences for hippocampus
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Hannah Dailey, Billboard, 26 Mar. 2025
Researchers long thought that the hippocampus, the region of the brain that’s in charge of making memories, wasn’t developed enough during infancy to encode specific events as memories.
—Sam Walters, Discover Magazine, 20 Mar. 2025
From the hippocampus, a crucial memory hub, to the vast neural networks in our cortex, the brain continuously forms new connections.
—Talia Milgrom-Elcott, Forbes, 13 Mar. 2025
Older adults who’ve suffered falls have a smaller hippocampus, a brain region that helps with spatial navigation, than those who avoid falling.
—Matt Fuchs, TIME, 7 Mar. 2025
See All Example Sentences for hippocampus
Cite this Entry
“Hippocampus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hippocampus. Accessed 19 Apr. 2025.
Copy CitationMedical Definition
hippocampus
noun
hip·po·cam·pus
ˌhip-ə-ˈkam-pəs
: a curved elongated ridge that is an important part of the limbic system, extends over the floor of the descending horn of each lateral ventricle of the brain, consists of gray matter covered on the ventricular surface with white matter, and is involved in forming, storing, and processing memory see pes hippocampi
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