| oncosphere | Synonym: hexacanth. Origin: onco-+ G. Sphaira, sphere (05 Mar 2000) |
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| oncosphere embryo | The embryo of tapeworms of the subclass Cestoda, such as Taenia saginata, characterised by three pairs of hooks used for penetration through the gut of an intermediate host. Synonym: oncosphere embryo. (05 Mar 2000) |