Hydatid
/ˈhaɪ.də.tɪd/noun
A cyst, especially one caused by the larval stage of a tapeworm; also, in biology, a small fluid-filled sac or vesicle.
Did you know?Hydatid comes from Greek ὑδατίς (hydatís), meaning a little water-drop or vesicle, a vivid image that later became the name of a dangerous parasite cyst.
Etymological Timeline
Ancient Greek
Greek
ὑδατίς (hydatís)
“a water-drop, blister, or vesicle”
Late Greek
Greek
ὑδατίς / ὑδατίδιον
“a small watery blister or sac”
Late Latin
Latin
hydatides
“watery cysts or vesicles”
18th Century
English
hydatid
“a cyst-like sac, especially in medical and zoological use”
Modern English
English
hydatid
“a parasitic cyst, especially one formed by tapeworm larvae”