seizure sei·zure (sē'zhər)
A sudden attack, spasm, or convulsion, as in epilepsy.
|seizure (sē'zhər) Pronunciation Key
A sudden episode of transient neurologic symptoms such as involuntary muscle movements, sensory disturbances and altered consciousness. A seizure is caused by abnormal electrical activity in the brain, which is often diagnosed on an electroencephalogram. See also epilepsy.