Variant of nephridium
- a waste-discharging tubule with an external excretory pore, found in many invertebrates, as in worms, mollusks, etc.
- any of the excretory tubules of the pronephros of a vertebrate embryo
Origin: ModL from Glassical Greek nephridion, diminutive of nephros, kidney: see nephro-
- nephridial adjective
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