Ascaridae
noun plural
As·car·i·dae
| \ ə-ˈskar-ə-ˌdē
\
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Medical Definition of Ascaridae
: a family of large nematode worms (superfamily Ascaridoidea) that are usually parasitic in the intestines of vertebrates, have three well-developed lips and a simple cylindrical esophagus, and include the common roundworm (Ascaris lumbricoides) parasitic in the human intestine — see ascaridia, ascaris