nephridium
/nɪˈfrɪdɪəm/noun
(pl. nephridia /-ɪə/)
- Zoology (in many invertebrate animals) a tubule open to the exterior which acts as an organ of excretion or osmoregulation. It typically has ciliated or flagellated cells and absorptive walls.【动】（许多无脊椎动物的）大管肾。
派生词
nephridial
adjective词源
late 19th cent.: modern Latin, from Greek nephrion （diminutive of nephros 'kidney'） + the diminutive ending -idium.