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The definition of cyst

3 Definitions of: cyst

1. noun, pathol any abnormal membranous sac or blisterlike pouch containing fluid or semisolid material
2. noun, anatomy any normal sac or vesicle in the body
3. noun, a thick-walled protective membrane enclosing a cell, larva, or organism
4. Show me some examples of this word: cyst
5. Show me the etymology of the word: cyst

Synonyms:	sac, growth, blister, wen, vesicle

From Collins