† acidulumn.

Inflections: Plural acidulae.

Origin: A borrowing from French; modelled on a Latin lexical item. Etymon: French acidule.

Etymology: < French acidule (1786 or earlier; < acide acid adj. + -ule -ule suffix), with alteration of the ending after classical Latin -ulum -ulum suffix. Compare earlier acidulated adj. and acidulate adj.French acidule was so called (by de Morveau) on account of the fact that such substances, though acid, contained an alkaline component.

Chemistry. Obsolete.

A partly neutralized vegetable acid. Usually with modifying word.tartareous acidulum: see the first element.

ΚΠ

1790 W. Nicholson tr. A.-F. de Fourcroy Elements Nat. Hist. & Chem. (new ed.) II. iii. vi. 648 A precipitate of sulphate of lime, with a small portion of tartareous acidulum, is then produced.

1813 J. M. Good et al. Pantologia at Oxalats Oxalic acid... The same salt or oxalic acidulum may also be produced, as has been sufficiently proved by Scheele, by adding pure oxalic acid to nitre.

1857 W. Rhind Hist. Veg. Kingdom (rev. ed.) xxi. 143 It [sc. oxalic acid] is not used in medicine or the arts, except in its state of acidulum, in which it is employed to make a sort of lemonade, and to discharge stains of ink.

This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2021).

单词	acidulum
释义	† acidulumn. Inflections: Plural acidulae. Origin: A borrowing from French; modelled on a Latin lexical item. Etymon: French acidule. Etymology: < French acidule (1786 or earlier; < acide acid adj. + -ule -ule suffix), with alteration of the ending after classical Latin -ulum -ulum suffix. Compare earlier acidulated adj. and acidulate adj.French acidule was so called (by de Morveau) on account of the fact that such substances, though acid, contained an alkaline component. Chemistry. Obsolete. A partly neutralized vegetable acid. Usually with modifying word.tartareous acidulum: see the first element. ΚΠ 1790 W. Nicholson tr. A.-F. de Fourcroy Elements Nat. Hist. & Chem. (new ed.) II. iii. vi. 648 A precipitate of sulphate of lime, with a small portion of tartareous acidulum, is then produced. 1813 J. M. Good et al. Pantologia at Oxalats Oxalic acid... The same salt or oxalic acidulum may also be produced, as has been sufficiently proved by Scheele, by adding pure oxalic acid to nitre. 1857 W. Rhind Hist. Veg. Kingdom (rev. ed.) xxi. 143 It [sc. oxalic acid] is not used in medicine or the arts, except in its state of acidulum, in which it is employed to make a sort of lemonade, and to discharge stains of ink. This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2021). < n.1790
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