[sɪst], (Noun)

Definitions:
- a thin-walled hollow organ or cavity in an animal or plant, containing a liquid secretion; a sac, vesicle, or bladder

- a membranous sac or cavity of abnormal character in the body, containing fluid

- a tough protective capsule enclosing the larva of a parasitic worm or the resting stage of an organism


Phrases:

Origin:
early 18th century: from late Latin cystis, from Greek kustis ‘bladder’