v. [mod. f. L. acid-um ACID + -FY = to make. Cf. Fr. acidifier.]
1. To make acid or sour. Chem. To convert into an ACID by combination with any substance. Also fig.
1797. Pearson, in Phil. Trans., LXXXVIII. 29. The three acids (viz the oxymuriatic, the nitro-muriatic, and the nitric) which can acidify oxides.
1808. Henry, Epit. Chem., 272 (ed. 5). Sugar is acidified by distillation with nitric acid.
1837. Carlyle, Fr. Rev., III. III. iii. 181. His thin existence all acidified into rage, and preternatural insight of suspicion.
1851. Richardson, Geol., v. 82. The name of the acid was derived from the substance acidified by the oxygen.
2. intr. (refl.) To become acid.
