Standard Lemma guide

zymogen

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 proenzyme, or enzyme precursor, which requires a biochemical change (i.e. hydrolysis) to become an active form of the enzyme.

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: none provided

Antonyms: none provided

2

noun

Meaning 2

any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: proenzyme

Antonyms: none provided

Broader terms: organic compound

History

Etymology

From zymo- + -gen.

Across languages

Translations

4 source translations are retained for this English entry.

  • Dutch: zimogeen — inactive precursor of an enzyme
  • Indonesian: zimogen — inactive precursor of an enzyme
  • Japanese: 酵素前駆体 (kousozenkutai) — inactive precursor of an enzyme
  • Romanian: zimogen — inactive precursor of an enzyme