from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Radiographic examination of the brain in which some of the cerebrospinal fluid is replaced with air or another gas that acts as a contrasting medium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An X-ray examination of the brain in which air replaces some of the cerebrospinal fluid to act as a contrast medium
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. roentgenography of the brain after spinal fluid has been replaced by a gas (usually oxygen); produces an encephalogram
encephalo- + -graphy (Wiktionary)