v.tr.1.  To grasp suddenly and forcibly; take or grab: seize a sword.
2. a.  To take by force; capture or conquer: The kidnappers seized the prince. The invaders seized the city.
b.  To take quick and forcible possession of; confiscate: The police seized a cache of illegal drugs.
 3. a.  To focus the attention or intellect on: seize an idea and develop it to the fullest extent.
b.  To make use of (an opportunity, for example).
 4. a.  To have a sudden overwhelming effect on: a heinous crime that seized the minds and emotions of the populace.
b.  To overwhelm physically: a person who was seized with a terminal disease.
 5.  also  seise (sēz) Law   To cause (someone) to be in possession of something.
6.  Nautical   To bind (a rope) to another, or to a spar, with turns of small line.
 v.intr.1.  To lay sudden or forcible hold of something.
2. a.  To cohere or fuse with another part as a result of high pressure or temperature and restrict or prevent further motion or flow.
b.  To come to a halt: The talks seized up and were rescheduled.
 3.  To exhibit signs of seizure activity, often with convulsions.