Definition of hydatid
: the larval cyst of a tapeworm (genus Echinococcus) occurring as a fluid-filled sac containing daughter cysts in which scolices develop
Origin of hydatid
Greek hydatid-, hydatis watery cyst, from hydat-, hydōr
First Known Use: 1683
Medical Definition of hydatid
1: the larval cyst of a tapeworm of the genus Echinococcus that usually occurs as a fluid-filled sac containing daughter cysts in which scolices develop but that occasionally forms a proliferating spongy mass which actively metastasizes in the host's tissues—called also ; see echinococcus 1
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Medical Dictionary: Definition of "hydatid"
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