encephalogram
Americannoun
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an x-ray of the brain, usually involving replacement of some cerebrospinal fluid by air or other gas that circulates to the brain's ventricular spaces and acts as a contrast medium.
noun
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an X-ray photograph of the brain, esp one (a pneumoencephalogram ) taken after replacing some of the cerebrospinal fluid with air or oxygen so that the brain cavities show clearly
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short for electroencephalogram
Etymology
Origin of encephalogram
First recorded in 1925–30; encephalo- + -gram 1
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
