Standard Lemma guide

haptoglobin

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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1

noun

Meaning 1

A protein in blood plasma that binds free hemoglobin released from erythrocytes and thereby inhibits its oxidative activity.

Definition source: English Wiktionary via Wiktextract

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: haptoglobulin

Antonyms: none provided

2

noun

Meaning 2

a protein in plasma that binds free hemoglobin and removes it (as from wounds)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: protein

History

Etymology

Analysable as hapto- + globin. .