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renal calculus

renal calculus

1 6.8
A hard stone that forms in the kidney can block the flow of urine
  • noun
  • /ˈrɛnəl ˈkælkjələs/
  • Specialized
: cálculo renal
  • After experiencing intense discomfort, she learned that a renal calculus was blocking her urinary tract.

Examples

  • The doctor explained that a renal calculus had formed in the patient's kidney, causing severe pain.

  • Other findings on follow-up included one child with intussusception, one death which was sudden and unexplained, and one child with renal calculi.

    Academic text (1991)
  • I also looked forward to telling Gus, who had himself suffered from the fabled renal calculi.

    Fiction book (2002)
  • Radiography showed bilateral nephrocalcinosis and a right renal calculus.

    Academic text (1996)
  • The index patient subsequently underwent right nephrotomies and ureterotomies for renal calculi and a left nephrectomy because of pyonephrosis.

    Academic text (1996)
  • Pei Zhong has made outstanding contributions to the improvement and innovation of shock wave lithotripsy technology and for the characterization of the mechanical properties of renal calculi.

    Academic text (2011)
  • He was relieved to find out that the renal calculus detected in his CT scan was small and could be managed with medication.

Synonyms

kidney stone
vsrenal calculus
20 3.7

A hard mass that forms in the kidney and often causes pain when you pee

focuses on mineral composition and location rather than symptoms
calculus
vsrenal calculus
  • Specialized
1 9.6

A hard lump of mineral that forms in organs like the kidney or gallbladder

applies only to stones that form inside the kidney
urolith
vsrenal calculus
  • Specialized
1 9.9

A hard stone that forms in the bladder or tubes that carry urine

refers only to stones formed inside the kidney
urinary calculus
vsrenal calculus
  • Specialized
1 7.2

A hard stone that forms in the kidney and can block urine

is specific to stones forming only inside the kidney
nephrolith
vsrenal calculus
  • Specialized
9.5

A hard stone that forms in the kidney

is the same meaning but uses a different word form

Surface Forms

renal calculus singular
renal calculi plural

Morphology

renal + calculus

The phrase is compositionally built from 'renal' (kidney-related) and 'calculus' (a concretion or stone), so its meaning 'stone in the kidney' is directly derivable from the constituents. It is a formal medical term (equivalent to 'kidney stone'), but given the medical senses of both words a B1 learner who knows them would understand the MWE.

Etymology

Renal calculus comes from a simple image: renal means 'of the kidney' and calculus means 'small stone'. So the name literally pictures a 'small stone' in the kidney, which is why it means a hard mass there that can cause pain or block urine.