† pentadicityn.

Origin: Formed within English, by derivation. Etymons: pentadic adj., -ity suffix.

Etymology: < pentadic adj. + -ity suffix; compare -icity suffix.

Chemistry. Obsolete. rare.

The condition of being pentavalent.

ΚΠ

1876 Proc. Royal Soc. 25 123 The author has given reasons..for the supposition that phosphorus oxychloride, POCl₃, and phosphorus thiochloride, PSCl₃ (bodies which are frequently adduced to show its pentadicity), are in reality derivatives of triad phosphorus.

1890 Cent. Dict. XV. 4379/1 Pentadicity, In chem., quintivalence.

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

单词	pentadicity
释义	† pentadicityn. Origin: Formed within English, by derivation. Etymons: pentadic adj., -ity suffix. Etymology: < pentadic adj. + -ity suffix; compare -icity suffix. Chemistry. Obsolete. rare. The condition of being pentavalent. ΚΠ 1876 Proc. Royal Soc. 25 123 The author has given reasons..for the supposition that phosphorus oxychloride, POCl₃, and phosphorus thiochloride, PSCl₃ (bodies which are frequently adduced to show its pentadicity), are in reality derivatives of triad phosphorus. 1890 Cent. Dict. XV. 4379/1 Pentadicity, In chem., quintivalence. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2018). < n.1876
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