A seizure is the act of taking by legal process or force, such as the seizure of evidence found at the scene of a crime.
A seizure is the act of seizing — a forceful action in which an object or person is suddenly taken over, grabbed, removed, or overwhelmed. It's not something you want to happen. Criminals may think the seizure of a wealthy person can bring them a fortune in ransom money. Another kind of seizure is the kind caused by a misfire of electrons in the brain, causing a loss of control of the body. It too is an unwanted taking over by force.