Coumarin
//ˈkuːməɹɪn// noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 The bicyclic aromatic compound 1,2-benzopyrone or any of its derivatives. countable, uncountable
"The postulated mechanism for the reaction of coumarin 4 as an antioxidant, as indicated in Fig 3, relies on the mercapto hydrogen atom (bold), which is under the influence of resonance and inductive effects."
Example
More examples"The postulated mechanism for the reaction of coumarin 4 as an antioxidant, as indicated in Fig 3, relies on the mercapto hydrogen atom (bold), which is under the influence of resonance and inductive effects."
Etymology
From coumarou (“tonka bean, Dipteryx odorata (syn. Coumarouna odorata)”) + -in, or from French coumarine.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.