miracidium
/ˌmaɪrəˈsɪdɪəm/noun
(pl. miracidia/-ɪə/)
- Zoology a free-swimming ciliated larval stage in which a parasitic fluke passes from the egg to its first host, typically a snail【动】纤毛幼虫, 毛蚴。
词源
late 19th cent.: from Greek meirakidion, diminutive of meirakion 'boy, stripling'.