miracidium
miracidium[ˌmʌɪrəˈsɪdɪəm](pl. miracidia )- (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
语源- late 19th cent.: from Greek meirakidion, diminutive of meirakion 'boy, stripling'
考试词汇表