noun, plural ne·phrid·i·a [nuh–frid-ee-uh] /nəˈfrɪd i ə/. Zoology.
- the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.
noun plural -ia (-ɪə)
- a simple excretory organ of many invertebrates, consisting of a tube through which waste products pass to the exterior
n.(plural nephridia), 1877, Modern Latin, from Greek diminutive of nephros “kidney” (see nephron). n. pl. ne•phrid•i•a (-ē-ə)
- The embryonic excretory organ from which the kidney develops.