hydatid

 
Pronunciation: /ˈhʌɪdətɪd/

noun

Medicine
  • a cyst containing watery fluid, in particular one formed by and containing a tapeworm larva: [as modifier]: a hydatid cyst
  • a tapeworm larva.

Origin:

late 17th century: from modern Latin hydatis, from Greek hudatis, hudatid- 'watery vesicle', from hudōr, hudat- 'water'