A cyst due to infection by larvae of some species of the tapeworm Echinococcus.

plural of hydatid

(anatomy) One of the small pedunculated bodies found between the testicle and the head of the epididymis, and supposed to be a remnant of the Müllerian duct.

plural of hydatid of Morgagni

Resembling a hydatid.

(pathology) The presence of hydatid cysts in the urine

(pathology) An infection by the larvae of the canine tapeworm Echinococcus granulosus.

plural of hydatidosis