encephalogram

Noun	1.	encephalogram - a graphical record of electrical activity of the brain; produced by an electroencephalograph EEG, electroencephalogram graph, graphical record - a drawing illustrating the relations between certain quantities plotted with reference to a set of axes
	2.	encephalogram - an X ray of the brain made by replacing spinal fluid with a gas (usually oxygen) to improve contrast pneumoencephalogram roentgenogram, X-ray photograph, X-ray picture, X ray - a radiogram made by exposing photographic film to X rays; used in medical diagnosis

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