noun Medicine/Medical.

a graphic record produced by an electroencephalograph. Abbreviation: EEG

Origin of electroencephalogram

First recorded in 1930–35; electro- + encephalogram
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for electroencephalogram

Historical Examples of electroencephalogram

  • His electroencephalogram revealed nine alpha cycles to the second, but too much theta.

    The Dictator

    Milton Lesser

British Dictionary definitions for electroencephalogram



med the tracing obtained from an electroencephalographAbbreviation: EEG
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for electroencephalogram

1934, from electro- + encephalo- (see encephalitis) + -gram.

Online Etymology Dictionary, © 2010 Douglas Harper

electroencephalogram in Medicine




A graphic record of brain waves as recorded by an electroencephalograph.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

electroencephalogram in Science



A graphic record of brain waves representing electrical activity in the brain, used especially in the diagnosis of seizures and other neurological disorders.♦ The instrument used to record an electroencephalogram is called an electroencephalograph.It generates a record of the electrical activity of the brain by measuring electric signals using a set of electrodes attached to the scalp that act as transducers. Differences of electric potential between different parts of the brain are measured by a portable set of galvanometers and printed as a wide paper strip with multiple simultaneous waveform tracings that have standard configurations in the normal brain.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

electroencephalogram in Culture


[(i-lek-troh-en-sef-uh- loh-gram)]

A written recording of the electrical activity of the brain. Electroencephalograms are useful in studying and detecting brain disorders.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.