• Webster's Revised Unabridged Dictionary
    • Encystment (Zoöl) A process by which many internal parasites, esp. in their larval states, become inclosed within a cyst in the muscles, liver, etc. See Trichina.
    • Encystment (Biol) A process which, among some of the lower forms of life, precedes reproduction by budding, fission, spore formation, etc.
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Century Dictionary and Cyclopedia
    • n encystment The process of becoming or the state of being encysted. Specifically, in biol.: A process which goes on in protozoans, by which, the pseudopodia or other prolongations of the body being withdrawn, the animal assumes a spherical shape, and becomes coated with a comparatively tough resisting layer, which thus forms a cyst. The process is usually preliminary to reproduction, one of the consequences of encystment being the formation within of spore-masses or plastidules, which at length escape on rupture of the cyst, and take up an independent existence. In infusorians three kinds of encystment are distinguished, technically called protective, duplicative, and sporular.
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In literature:

Ambrose found a needle encysted in the heart of a negress.
"Anomalies and Curiosities of Medicine" by George M. Gould
Encystation of Protozoa, 115.
"Darwin, and After Darwin (Vol. 1 and 3, of 3)" by George John Romanes
That the Digitalis may be used with advantage in every species of dropsy, except the encysted.
"An Account of the Foxglove and some of its Medical Uses" by William Withering
The notion of a soul from a spiritual world encysted in customs and feelings developed upon it by nature, is a myth.
"The Arena" by Various
This process of nature of repairing injury by encysting the cause is of interest to the dentist in the study of suitable filling-materials.
"Tin Foil and Its Combinations for Filling Teeth" by Henry L. Ambler
It's merely that Time has been trying to encyst what it can not absorb.
"The Prairie Child" by Arthur Stringer
The tissue, thus encysted, gradually softens, becomes disintegrated, and breaks down into pus.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
It's an encysted medieval survival, isn't it?
"The Ego Machine" by Henry Kuttner
Also an encysted tumour containing matter of a curdy appearance.
"The New Gresham Encyclopedia. Vol. 1 Part 2" by Various
It had become completely encysted.
"The Life and Public Services of James A. Garfield" by Emma Elizabeth Brown
And this would seem to be the rule with all parasites, of the encysted kind.
"Epidemics Examined and Explained: or, Living Germs Proved by Analogy to be a Source of Disease" by John Grove
Name some protozoa which encyst.
"A Guide for the Study of Animals" by Worrallo Whitney
Same encysted dejected from rectum to be swallowed by tadpole.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 4" by Various
Encystment thus means the tomb of the foreign invader.
"The Philippines A Century Hence" by Jose Rizal
Encystment is nearly always double, i.e.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5" by Various
XIV., Encysted zygote (oocyst).
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7" by Various
Habit had almost encysted his affection for his superior.
"Woven with the Ship" by Cyrus Townsend Brady
Sometimes the exudation may become encysted above the pelvis and leave the contents of the latter free.
"A System of Practical Medicine by American Authors, Vol. I" by Various
The process may take place when the cell is naked or after preliminary encystment.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2" by Various
When conditions unfavorable for life come, the amoeba, like some one-celled plants, encysts itself within a membranous wall.
"A Civic Biology" by George William Hunter