electroencephalogram
🇺🇸
/ɪˌlektrəʊɪnˈsefələɡræm/
🇬🇧
/ɪˌlektrəʊɪnˈsefələɡræm/
A test that doctors use to check how your brain is working by looking at the electrical signals it sends out.
The doctor ordered an electroencephalogram to monitor the patient's brain activity during sleep.