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.
- any of certain saclike structures in plants or animals
- such a structure or pocket in the body when abnormal and filled with fluid or diseased matter
- a spherical, usually thick membrane, resistant to freezing, drying, etc., with which certain organisms are surrounded when in a resting stage
Origin of cystModern Latin cystis ; from Classical Greek kystis, sac, bladder ; from uncertain or unknown; perhaps Indo-European base an unverified form ?us-, variant, variety of an unverified form ?wes-, to wheeze, blow
cysto-: used before a vowel
sac, pouch, bladder: blastocyst
Origin of -cyst; from Classical Greek kystis: see cyst
- An abnormal membranous sac in the body containing a gaseous, liquid, or semisolid substance.
- A sac or vesicle in the body.
- Biology A small capsulelike sac that encloses certain organisms in their dormant or larval stage.
- Botany A thick-walled resting spore, as in certain algae or fungi.
Origin of cystNew Latin cystis, from Greek kustis, bladder; see kwes- in Indo-European roots.
Variant of cysto–.