Definition of "Sequester" :
verb: set apart from others
"The dentist sequesters the tooth he is working on."
verb: keep away from others
"He sequestered himself in his study to write a book."
verb: undergo sequestration by forming a stable compound with an ion
"The cations were sequestered."
verb: take temporary possession of as a security, by legal authority
verb: requisition forcibly, as of enemy property
"The estate was sequestered."