kidneys

Cultural  

1. A pair of organs, the principal parts of the excretory system, located above the waistline at the back of the abdominal cavity. The kidneys filter waste materials from the blood, excreting these wastes in the form of urine; they also regulate the amounts of water and other chemicals in body fluids.

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Example Sentences

She now needs energy-sapping dialysis treatment three times a week to replace the job of her kidneys, which went into renal failure.

From BBC • Mar. 24, 2026

Maya, 16, from Hadleigh in south Essex, had the transplant on 6 January after suffering severe damage to her kidneys following an e-coli infection two years earlier.

From BBC • Mar. 16, 2026

Problems were seen in iron recycling within the spleen and in the normal functioning of the lungs, intestines and kidneys.

From Science Daily • Mar. 1, 2026

Kidneys require gravity to function properly, and the longer people spend in space, the more their kidneys start to malfunction.

From Slate • Mar. 1, 2026

But only red blood cells were affected by the altered genes—not Noel’s neurons or kidneys or liver cells or muscle cells.

From "The Gene" by Siddhartha Mukherjee