† oxidulen.

Forms: 1800s oxidule, 1800s oxydule.

Origin: A borrowing from French. Etymons: French oxidule, oxydule.

Etymology: < French †oxidule (1813 or earlier), oxydule lowest degree of oxidation, protoxide (1824) < †oxide , oxyde oxide n. + -ule -ule suffix, after acidule , noun (1799 or earlier; 1747 as adjective: see acidulous adj.) and perhaps also oxidulé (see oxidulated adj.). Compare Swedish oxidul (1810 in Berzelius). Compare earlier oxidulated adj.With the variation in form compare also oxide n. and discussion at that entry.

Obsolete.

An oxide containing a smaller proportion of oxygen than another compound.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > oxygen > [noun] > compounds > oxides > by proportion of oxygen

tritoxide1806

oxidule1815

quadroxide1825

sesquioxide1831

pentoxide1851

tetroxide1866

trioxide1868

1815 W. Henry Elements Exper. Chem. (ed. 7) II. i. xix. 49 [In the case] of only two oxides..we might have applied the term oxide to the metal fully saturated with oxygen, and of oxidule to the compound at an inferior stage of oxidizement, as has been done by several of the French chemists.

1861 Sci. Amer. 4 May 273/3 The oxydule of copper, which very often contributes to acidify this metal [sc. sodium], is immediately decomposed by this energetic agent.

This entry has been updated (OED Third Edition, March 2005; most recently modified version published online December 2020).

单词	oxidule
释义	† oxidulen. Forms: 1800s oxidule, 1800s oxydule. Origin: A borrowing from French. Etymons: French oxidule, oxydule. Etymology: < French †oxidule (1813 or earlier), oxydule lowest degree of oxidation, protoxide (1824) < †oxide , oxyde oxide n. + -ule -ule suffix, after acidule , noun (1799 or earlier; 1747 as adjective: see acidulous adj.) and perhaps also oxidulé (see oxidulated adj.). Compare Swedish oxidul (1810 in Berzelius). Compare earlier oxidulated adj.With the variation in form compare also oxide n. and discussion at that entry. Obsolete. An oxide containing a smaller proportion of oxygen than another compound. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > oxygen > [noun] > compounds > oxides > by proportion of oxygen tritoxide1806 oxidule1815 quadroxide1825 sesquioxide1831 pentoxide1851 tetroxide1866 trioxide1868 1815 W. Henry Elements Exper. Chem. (ed. 7) II. i. xix. 49 [In the case] of only two oxides..we might have applied the term oxide to the metal fully saturated with oxygen, and of oxidule to the compound at an inferior stage of oxidizement, as has been done by several of the French chemists. 1861 Sci. Amer. 4 May 273/3 The oxydule of copper, which very often contributes to acidify this metal [sc. sodium], is immediately decomposed by this energetic agent. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online December 2020). < n.1815
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