renal

IPA/ˈriːnl/
KK[rˈinəl]IPA/ˈriːnl/

renal — adjective

  • renalpositive
  • more renalcomparative
  • most renalsuperlative

1. Relating to the two bean-shaped body organs that clean waste from your blood and

1.adjectiveB2
Definition

Relating to the two bean-shaped body organs that clean waste from your blood and produce urine. Used mainly in medical or clinical settings rather than in everyday talk.

Example

The patient's renal function improved after three weeks of treatment.

collocation: renal function — a common medical pairing

Dr. Adaeze referred Mr. Chen to a renal specialist for further tests.

collocation: renal specialist — naming a medical professional

Common collocations
  • renal function
  • renal failure
  • renal disease
  • renal unit
  • renal specialist
  • renal artery
  • renal transplant
Synonyms
  • kidney

    Everyday noun used attributively ('kidney disease'); less formal than 'renal'

  • nephric

    Very rare technical synonym from Greek 'nephros'; appears only in specialized anatomy texts

Grammar Patterns

renal + noun

be + renal

Usage Note

Formal medical register; in everyday speech, 'kidney' (used as a modifier) is far more common — most people say 'kidney disease' rather than 'renal disease', though both are correct in clinical writing.

Common Mistakes

I have a renal pain.
I have a pain in my kidney area.
'Renal' is a clinical adjective used in medical reports, not in everyday speech about personal symptoms.
The renal of the patient is damaged.
The patient's kidneys are damaged.
'Renal' is an adjective, not a noun. The noun form is 'kidney'.

Word family

  • renally
    adverbC1
  • renin
    nounC1

Synonym discussion

Sense: adjective/1

Renal is the formal medical adjective, used in clinical writing and professional contexts ('renal function', 'renal failure'). Kidney is the everyday noun that doubles as a modifier in casual speech ('kidney stones', 'kidney disease'), and it is far more common in daily life. Nephric is an even rarer technical synonym derived from Greek (nephros = kidney) and appears almost exclusively in anatomy textbooks and specialized research papers. In practice, renal and kidney are often interchangeable—the choice signals register. A doctor might tell a patient 'your kidney function looks good' but write 'renal function within normal limits' in the chart.

renal ↗kidney ↗nephric ↗

Common collocations

Nouns

Phrases

  • acute renal failure
  • chronic renal disease
  • renal replacement therapy

Etymology

LatinFrenchEnglish

From Latin 'ren' (kidney) plus the adjective-forming suffix '-al'. The word entered English in the early 1600s through French 'rénal' or directly from Late Latin 'renalis'. The Greek-derived counterpart 'nephric' (from 'nephros') is rarer and used mostly in anatomy.