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Meaning of pneumoencephalogram

pneu•mo•en•ceph•a•lo•gram

Pronunciation: (n"mō-en-sef'u-lu-gram", ny"-), [key]
— n. Med.
  1. 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.
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