Definition of oncosphere in English:

oncosphere

(also onchosphere)

noun

Zoology
  • A tapeworm embryo or larva in the form in which it hatches from the egg, having a small, oval body bearing three pairs of chitinous hooks for attachment to the tissues of the intermediate host; a proscolex, a hexacanth.

Origin

Late 19th century; earliest use found in American Naturalist. From ancient Greek ὄγκος barb + sphere, after French oncosphère.

Pronunciation

oncosphere

/ˈɒŋkə(ʊ)sfɪə/