Definitions

from The Century Dictionary.

  • noun A glucoside (C21H22O13) found in the bark of the common ash-tree, Fraxinus excelsior, and of the horse-chestnut.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A colorless crystalline substance (C16H18O10) found in the bark of the ash (Fraxinus), and along with esculin in the bark of the horse-chestnut. It is structurally a derivative of a coumarin glucoside. It shows a delicate blue-green fluorescence in alkaline solutions; -- called also paviin and fraxoside.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry A colourless crystalline substance, regarded as a glucoside, found in the bark of the ash (Fraxinus) and along with esculin in the bark of the horse-chestnut. It is faintly fluorescent in alkaline solutions.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Fraxinus.

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