encephalogram

[ en-sef-uh-luh-gram ]

noun

, Medicine/Medical.

1. 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.

encephalogram

/ ɛnˈsɛfələˌɡræm /

noun

1. 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
2. short for electroencephalogram

Word History and Origins

Origin of encephalogram¹

First recorded in 1925–30; encephalo- + -gram ¹

Related Words

• radioactivity
• Roentgen rays
• Röntgen rays