scyphistoma
/sahy-fis-tuh-muh/US // saɪˈfɪs tə mə //UK // (saɪˈfɪstəmə) //
镰刀状瘤,囊肿,镰刀瘤,鞘膜积液
Definitions
n.名词 noun
- 1
plural scy·phis·to·mae [sahy-fis-tuh-mee], /saɪˈfɪs təˌmi/, scy·phis·to·mas.
- : a stage in the life cycle of a jellyfish or other scyphozoan when it is fixed in place and reproduces asexually to produce free-swimming medusas.
Examples
Strobila, stro-bī′la, n. a discomedusan at the stage succeeding the scyphistoma: a segmented tapeworm.
The original terminal ring of tentacles of the Scyphistoma gradually atrophies.
With the above changes the so-called Hydra tuba or Scyphistoma form is reached (vide fig. 85).
The formation of the sexual Medusa form takes place by a kind of strobilization of the body of the fixed Scyphistoma.
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