Found 2 items, similar to Nephridia.
English → English (WordNet) Definition: nephridia nephridia See nephridium
English → English (gcide) Definition: Nephridia Nephridium \Ne*phrid"i*um\, n.; pl. Nephridia. [NL., fr. Gr. ? of the kidneys.] (Zo["o]l. & Anat.) A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under Loeven's larva. [1913 Webster]