| 1. | Pathology. a closed, bladderlike sac formed in animal tissues, containing fluid or semifluid matter. |
| 2. | a bladder, sac, or vesicle. |
| 3. | Botany, Mycology.
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| 4. | Zoology.
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An abnormal saclike structure that develops in the body and is filled with fluid or semisolid material.
cyst (sĭst)
n.
An abnormal membranous sac containing a gaseous, liquid, or semisolid substance.
A sac or vesicle in the body.
A small capsulelike sac that encloses certain organisms in their dormant or larval stage.