- meganephridia
-
n. pl.; sing. -ium [Gr. megas, large; dim. nephros, kidney](ANNELIDA: Oligochaeta)A pair of large nephridia in each segment of the body except, for first and last segments; holonephridia; holoic; macroic; see nephridium, micronephridia.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.