Encystment

Webster's Dictionary of the English Language

·noun A process which, among some of the lower forms of life, precedes reproduction by budding, fission, spore formation, ·etc.

II. Encystment ·noun A process by which many internal parasites, ·esp. in their larval states, become inclosed within a cyst in the muscles, liver, ·etc. ·see Trichina.