1.requisition forcibly, as of enemy property;
the estate was sequestered
2.take temporary possession of as a security, by legal authority;
The FBI seized the drugs
3.undergo sequestration by forming a stable compound with an ion;
The cations were sequestered
4.keep away from others;
He sequestered himself in his study to write a book
5.set apart from others;
The dentist sequesters the tooth he is working on