acid·i·fy /-ˌfaɪ/
  (vt.)使變酸,使成酸,變酸
  acid·i·fy /-əˌfaɪ/ 動詞
  酸化,變酸
  A·cid·i·fy v. t. [imp. & p. p. Acidified p. pr. & vb. n. Acidifying ]
  1. To make acid; to convert into an acid; as, to acidify sugar.
  2. To sour; to imbitter.
     His thin existence all acidified into rage.   --Carlyle.
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  acidify
       v 1: make sour or more sour [syn: sour, acidulate, acetify]
            [ant: sweeten]
       2: turn acidic; "the solution acetified" [syn: acetify] [ant:
           alkalize]
       [also: acidified]