encystation

enUK

en·cyst

E0130100 (ĕn-sĭst′)v. en·cyst·ed, en·cyst·ing, en·cysts v.tr. To enclose in or as if in a cyst.v.intr. To take the form of or become enclosed in a cyst.
en·cyst′ment, en′cys·ta′tion n.