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
: 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
hippocampal adjective

Examples of hippocampus in a Sentence

Recent Examples on the Web One of these might, say, represent all the molecular-scale ions, ion channels and so forth that produce currents in our neurons; another represents the firing patterns of the neurons themselves; another, the activity seen in compartments of the brain such as the hippocampus and frontal cortex. Quanta Magazine, 10 June 2024 Regions involved in emotions, such as the amygdala and the hippocampus, show peak structural and functional changes during the teen years. Bj Casey, Scientific American, 14 May 2024 To access a lesion in the patient’s hippocampus, a surgeon had removed the tissue from their left anterior temporal lobe, a part of the brain thought to play a role in our memory of objects, people, words and facts. Will Sullivan, Smithsonian Magazine, 10 May 2024 Share [Findings] Scientists trained subjects to exercise control over a single neuron, linked the hippocampus to regret, and concluded that humans smell in stereo. Rafil Kroll-Zaidi, Harper's Magazine, 22 May 2024 See all Example Sentences for hippocampus 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hippocampus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

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

First Known Use

1695, in the meaning defined above

Time Traveler
The first known use of hippocampus was in 1695

Dictionary Entries Near hippocampus

Cite this Entry

“Hippocampus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hippocampus. Accessed 21 Jun. 2024.

Medical Definition

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)
: 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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