encysted; encysting; encysts

transitive verb

: to enclose in a cyst

intransitive verb

: to form or become enclosed in a cyst

Word History

First Known Use

1720, in the meaning defined at transitive sense

Time Traveler
The first known use of encyst was in 1720

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Cite this Entry

“Encyst.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/encyst. Accessed 30 Mar. 2025.

Kids Definition

encyst

verb
: to form or become enclosed in a cyst

Medical Definition

encyst

transitive verb
: to enclose in or as if in a cyst
an encysted tumor

intransitive verb

: to form or become enclosed in a cyst
protozoans encysting in order to resist desiccation

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