Removal from a cyst; denoting the action of certain encysted organisms in escaping from their envelope. ... (05 Mar 2000) ... 
(ek″sis-ta´shәn) escape from a cyst or envelope, as in that stage in the life cycle of parasites occurring after the cystic form has been swallowed by the host.
Type: Term Pronunciation: ek′sis-tā′shŭn Definitions: 1. Removal from a cyst; denoting the action of certain encysted organisms in escaping from their envelope.