a large bladder containing encysted larvae of the tapeworm Echinococcus: causes serious disease in humans
2. Also called: hydatid cyst
a sterile fluid-filled cyst produced in humans and animals during infestation by Echinococcus larval forms
Word origin
C17: from Greek hudatis watery vesicle, from hudōr, hudat- water
hydatid in American English
(ˈhaɪdəˌtɪd)
noun
1.
a cyst containing watery fluid and the larvae of certain tapeworms (esp. genus Echinococcus), found in the body tissue, esp. the liver, of many animals
adjective
2.
of or like such a cyst
Word origin
Gr hydatis (gen. hydatidos), watery vesicle < base of hydōr, water