Phrase guide

coenzyme Q

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

A coenzyme used in bacteria and animals containing 5,6-dimethoxy-3-methylcyclohexa-2,5-diene-1,4-dione with an isoprene side chain.

Definition source: English Wiktionary via Wiktextract

Usage: 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

any of several quinones found in living cells and that function as coenzymes that transfer electrons from one molecule to another in cell respiration

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: ubiquinone

Antonyms: none provided

Broader terms: coenzyme, quinone, benzoquinone

History

Etymology

from coenzyme + Q for quinone

Across languages

Translations

2 source translations are retained for this English entry.

  • Hungarian: koenzim Q — Translations
  • Indonesian: koenzim Q — Translations