elec·​tro·​en·​ceph·​a·​lo·​gram i-ˌlek-trō-in-ˈse-f(ə-)lə-ˌgram How to pronounce electroencephalogram (audio)
: the tracing of brain waves made by an electroencephalograph

Example Sentences

Recent Examples on the Web Memories of especially strong spiritual encounters—such as, for example, union with God—have been observed using electroencephalogram technology. Arthur C. Brooks, The Atlantic, 27 Oct. 2022 These colorful swirls are representations of creator Simone Frettoli’s own electroencephalogram (EEG) waves. Liz Tormes, Scientific American, 26 Aug. 2022 These electrical flurries, which can be observed as sharp spikes on an electroencephalogram (EEG), tend to happen in early sleep stages when brain activity is otherwise low. Rebecca Sohn, Scientific American, 27 July 2022 There are no specific tests to diagnose Tourette syndrome, but sometimes laboratory tests such as blood tests, magnetic resonance imaging or electroencephalogram may be used to rule out other conditions that may be causing your child’s symptoms. Tribune News Service, al, 29 June 2022 The electroencephalogram electrodes were removed from her head. Terry Demio, The Enquirer, 5 May 2022 The idea is to use its earbuds to capture an electroencephalogram, a standard tool for assessing brain activity. Steven Levy, Wired, 14 Apr. 2022 After doctors ordered an electroencephalogram (EEG) to examine his brain, Henry was diagnosed with benign epilepsy of infancy. Stephanie Emma Pfeffer, PEOPLE.com, 12 Apr. 2022 The team was performing a test that detects electrical activity in the brain, called an electroencephalogram (EEG), to learn more about what was happening during his seizures. Corryn Wetzel, Smithsonian Magazine, 28 Feb. 2022 See More

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

Word History


International Scientific Vocabulary

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of electroencephalogram was in 1934

Dictionary Entries Near electroencephalogram

Cite this Entry

“Electroencephalogram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electroencephalogram. Accessed 6 Dec. 2022.

Kids Definition



elec·​tro·​en·​ceph·​a·​lo·​gram i-ˌlek-trō-en-ˈsef-ə-lə-ˌgram How to pronounce electroencephalogram (audio)
: the tracing of brain waves that is made by an electroencephalograph

Medical Definition



elec·​tro·​en·​ceph·​a·​lo·​gram -in-ˈsef-ə-lə-ˌgram How to pronounce electroencephalogram (audio)
: the tracing of brain waves made by an electroencephalograph

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