Dictionary
pneu•mo•en•ceph•a•lo•gram
Pronunciation: (nOO"mō-en-sef'u-lu-gram", nyOO"-), [key]—
n. Med.
an encephalogram made after the replacement of the cerebrospinal fluid by air or gas, rarely used since the development of the CAT scanner.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.