seizure UK /ˈsiː.ʒə(ɹ)/US /ˈsi.ʒɚ/noun 7verb 1forms 3 noun7 •The act of taking possession, as by force or right of law.the seizure of a thief, a property, a throne, etc.The search warrant permitted the seizure of evidence. •A sudden attack or convulsion; the physical manifestation of the abnormal electrical discharges in the brain characteristic of epilepsy.I haven't had a seizure since I started that medication.Seizures can be caused by exposure to certain poisons or toxins. •An abnormal electrical discharge in the brain, as is typical of epilepsy. •The state of being seized or of having been taken.The continued seizure of the car is a violation of my rights. •That which is seized, or taken possession of; a thing laid hold of, or possessed.The seizure includes various belongings taken from his house and his office. •A sudden onset of pain or emotion.He felt the seizure of pain when the heart attack began. •(no longer used) A retention within one's grasp or power; possession; ownership.Make o'er thy honour by a deed of trust, / And give me seizure of the mighty wealth. — 1690 verb1 •(informal) To experience an epileptic seizure.My doctor prescribed Namility. It made my vision blurry, I told him. He said keep taking it, it'll stop. Next day at work I seizured in the middle of an order. — 2019 formsseizured · seizuring · seizures