v. [f. L. acidul-us sourish (dim. of acid-us ACID) + -ATE3, as if repr. a L. *acidulā-re. Cf. mod. Fr. aciduler.] To make somewhat acid or sour; to flavor with an acid. Also fig. of the temper. (Rare exc. in pa. pple.)

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1732.  Arbuthnot, Rules of Diet, 311. Decoctions of mealy substances acidulated.

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1747.  Wall, in Phil. Trans., XLIV. 588. I acidulated the Liquors with the Vitriolic Acid.

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1844.  T. J. Graham, Dom. Med., 91. [Vinegar] may be used to acidulate barley-water, or any other ordinary beverage of the patient.

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1856.  Macaulay, Johnson (1860), 99. Garrick … could obtain from one morose cynic scarcely any compliment not acidulated with scorn.

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