Cyst Definition
sĭst
cysts
noun
cysts
Such a structure or pocket in the body when abnormal and filled with fluid or diseased matter.
Webster's New World
A sac or vesicle in the body.
American Heritage Medicine
Any of certain saclike structures in plants or animals.
Webster's New World
A spherical, usually thick membrane, resistant to freezing, drying, etc., with which certain organisms are surrounded when in a resting stage.
Webster's New World
The definition of a cyst is a closed sac or hollow cavity filled with liquid that develops unnaturally in people, animals or plants.
When a hollow fluid-filled cavity appears in the tissue of your body where it does not belong, this is an example of a cyst.
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Other Word Forms of Cyst
Noun
Singular:
cyst
Plural:
cysts
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