|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|1.||a large bladder containing encysted larvae of the tapeworm Echinococcus: causes serious disease in man|
|2.||Also called: hydatid cyst a sterile fluid-filled cyst produced in man and animals during infestation by Echinococcus larval forms|
|[C17: from Greek hudatis watery vesicle, from hudōr, hudat- water]|
hydatid hy·da·tid (hī'də-tĭd)
A hydatid cyst.
The encysted larva of Echinococcus granulosus.
An abnormal vascular structure that is usually filled with fluid.