[ sɪ'kwɛstə ]
■ verb
1》 [often as adjective ~ed ] isolate or hide away.
2》 another term for sequestrate .
3》 Chemistry form a chelate or other stable compound with (an ion, molecule, etc.) so that it cannot react.
Origin
ME: from OFr. sequestrer or late L. sequestrare 'commit for safe keeping', from L. ~ 'trustee'.