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
Origin of -cystfrom 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.