Definition of nephromixium in English:

nephromixium

Pronunciation /ˌnɛfrə(ʊ)ˈmɪksɪəm/

noun

Zoology
  • A combined nephridium and gonoduct (coelomoduct), found in many polychaetes.

Origin

Early 20th century. From nephro- + ancient Greek μίξις mingling.