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nephritis
nephro-
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nephrology
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nephroscope
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nephrostome

neph·ro·stome [ néffrə stm ] (plural neph·ro·stomes)


noun 
Definition:
 
opening to nephridium: the funnel-shaped inner opening of a nephridium that is lined with cilia and allows water and waste to enter from the body cavity

[Late 19th century. <nephro- + Greek stoma "mouth"]
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