Standard Lemma guide

pyelonephritis

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

An ascending urinary tract infection of the renal pelvis

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: medicine, pathology, sciences

Examples

  • 2001, Jeffery Hughes, 12: Infectious Diseases, N. A. Hughes, Clinical Pharmacy, Macmillan Health, 2nd Edition, page 215, Primary acute pyelonephritis most commonly occurs in females, with 90% of cases caused by Escherichia coli.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

inflammation of the kidney and its pelvis caused by bacterial infection

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: urinary tract infection

Narrower terms: acute pyelonephritis, chronic pyelonephritis

History

Etymology

From pyelo- (“relating to the renal pelvis”) + nephritis.

Across languages

Translations

2 source translations are retained for this English entry.

  • Finnish: munuaisallastulehdus — infection of the renal pelvis
  • Swedish: njurbäckeninflammation — infection of the renal pelvis