Encystment

noun

1. The process of becoming or the state of being encysted.
2. A process which, among some of the lower forms of life, precedes reproduction by budding, fission, spore formation, etc.
3. A process by which many internal parasites, esp. in their larval states, become inclosed within a cyst in the muscles, liver, etc. See Trichina.
4. The formation of a cyst
5. The process of becoming enclosed by a cyst