on·co·sphere
variants:
also onchosphere \
ˈäŋ-kō-ˌsfi(ə)r 
\
\
Medical Definition of oncosphere
: a tapeworm embryo that has six hooks and is the earliest differentiated stage of a cyclophyllidean tapeworm
— called also hexacanth embryo
Learn More About oncosphere
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“Oncosphere.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/oncosphere. Accessed 29 Jun. 2022.
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