miracidium
Concise Oxford English Dictionary © 2008 Oxford University Press:
miracidium /ˌmʌɪrəˈsɪdɪəm/
▶noun (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.
– origin C19: from Gk meirakidion, dimin. of meirakion ‘boy, stripling’.
'miracidium' also found in these Oxford entries:
