† pentonen.

Origin: Formed within English, by derivation. Etymons: penta- comb. form, -one suffix.

Etymology: < penta- comb. form + -one suffix.

Chemistry. Obsolete.

An unsaturated liquid hydrocarbon with the formula C₅H₆.

ΚΠ

1876 W. A. Tilden Introd. Study Chem. Philos. 83 Pentone.

1877 H. Watts Fownes's Man. Chem. II. 64 Valylene or pentone, C₅H₆,..is formed by the action of alcoholic potash on valerylene dibromide.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2018).

单词	pentone
释义	† pentonen. Origin: Formed within English, by derivation. Etymons: penta- comb. form, -one suffix. Etymology: < penta- comb. form + -one suffix. Chemistry. Obsolete. An unsaturated liquid hydrocarbon with the formula C₅H₆. ΚΠ 1876 W. A. Tilden Introd. Study Chem. Philos. 83 Pentone. 1877 H. Watts Fownes's Man. Chem. II. 64 Valylene or pentone, C₅H₆,..is formed by the action of alcoholic potash on valerylene dibromide. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2018). < n.1876
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