hippocampus

noun
hip·​po·​cam·​pus | \ ˌhi-pə-ˈkam-pəs How to pronounce hippocampus (audio) \
plural hippocampi\ ˌhi-​pə-​ˈkam-​ˌpī How to pronounce hippocampus (audio) , -​(ˌ)pē \

Definition of hippocampus

: 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

Other Words from hippocampus

hippocampal \ ˌhi-​pə-​ˈkam-​pəl How to pronounce hippocampus (audio) \ adjective

Examples of hippocampus in a Sentence

Recent Examples on the Web Other scientists have found that COVID-19 damages the hippocampus. Amina Khan Staff Writer, Los Angeles Times, 5 Nov. 2021 The hippocampus, thought to be responsible for forming memories, continues developing until at least the age of seven. Jeanne Shinskey, CNN, 13 Aug. 2021 Studies show that isolation takes a toll on our brains, shrinking our hippocampus. Patrick Mcnamara, sun-sentinel.com, 8 Oct. 2021 DNA methylation changes are especially crucial in brain areas like the hippocampus that are involved in learning and memory. Adam Schuller, The Conversation, 30 Aug. 2021 The hippocampus is likely to play a key role in aging, given its involvement in memory and cognitive processes. Jessica Bernard, The Conversation, 24 Sep. 2021 For years, Buzsáki has studied sharp wave-ripples, a type of brain activity in the hippocampus that enables the storage and retrieval of memories. Quanta Magazine, 24 Aug. 2021 Brain imaging studies have shown that people with PTSD have less volume in their hippocampus, a sign that neurogenesis — the growth of new neurons — is impaired. Smithsonian Magazine, 18 Aug. 2021 For instance, researchers at UC Irvine found that 3D games can improve the functioning of the hippocampus, which is the part of the brain that’s involved with learning and memory. Thom James Carter, Wired, 26 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hippocampus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hippocampus

1695, in the meaning defined above

History and Etymology for hippocampus

New Latin, from Greek hippokampos seahorse, from hippos horse + kampos sea monster — more at equine

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Time Traveler for hippocampus

Time Traveler

The first known use of hippocampus was in 1695

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Dictionary Entries Near hippocampus

hippocampine

hippocampus

Hippocastanaceae

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Statistics for hippocampus

Last Updated

11 Nov 2021

Cite this Entry

“Hippocampus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hippocampus. Accessed 27 Nov. 2021.

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More Definitions for hippocampus

hippocampus

noun
hip·​po·​cam·​pus | \ ˌhip-ə-ˈkam-pəs How to pronounce hippocampus (audio) \
plural hippocampi\ -​ˌpī How to pronounce hippocampus (audio) , -​(ˌ)pē How to pronounce hippocampus (audio) \

Medical Definition of hippocampus

: 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

More from Merriam-Webster on hippocampus

Nglish: Translation of hippocampus for Spanish Speakers

Britannica.com: Encyclopedia article about hippocampus

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