Standard Lemma guide

bilirubin

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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  • /bɪlɪˈɹuːbɪn/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A bile pigment that is a product of the breakdown of the heme portion of hemoglobin (which occurs within macrophages as they digest red blood cells), and which is responsible for the yellowish color seen in bruises. Extremely high levels of bilirubin may cause jaundice.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: hematoidin, haematoidin

Antonyms: none provided

Broader terms: animal pigment

History

Etymology

From international scientific vocabulary, from German Bilirubin. By surface analysis, bili- + rub- + -in. The German word was naturalized into other languages as international scientific vocabulary (e.g., bilirubin, bilirubine, bilirubina).

Across languages

Translations

13 source translations are retained for this English entry.

  • Chinese Mandarin: 膽紅素 /胆红素 (dǎnhóngsù) — bile pigment
  • Finnish: bilirubiini — bile pigment
  • French: bilirubine — bile pigment
  • German: Bilirubin — bile pigment
  • Greek: χολερυθρίνη (cholerythríni) — bile pigment
  • Irish: bilearúibin — bile pigment
  • Japanese: ビリルビン (birirubin) — bile pigment
  • Korean: 빌리루빈 (billirubin) — bile pigment
  • Polish: bilirubina — bile pigment
  • Portuguese: bilirrubina — bile pigment
  • Russian: билируби́н (bilirubín) — bile pigment
  • Tamil: பிலிரூபின் (pilirūpiṉ) — bile pigment
  • Turkish: bilirübin — bile pigment