acidify

from WordNet (r) 3.0 (2006)

acidify
    v 1: make sour or more sour [syn: {sour}, {acidify},
         {acidulate}, {acetify}] [ant: {dulcify}, {dulcorate},
         {edulcorate}, {sweeten}]
    2: turn acidic; "the solution acetified" [syn: {acidify},
       {acetify}] [ant: {alkalify}, {alkalise}, {alkalize},
       {basify}]

from The Collaborative International Dictionary of English v.0.48

Acidify \A*cid"i*fy\, v. t. [imp. & p. p. {Acidified}; p. pr. &
   vb. n. {Acidifying}.] [L. acidus sour, acid + -fy: cf. F.
   acidifier.]
   1. To make acid; to convert into an acid; as, to acidify
      sugar.
      [1913 Webster]

   2. To sour; to imbitter.
      [1913 Webster]

            His thin existence all acidified into rage.
                                                  --Carlyle.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

29 Moby Thesaurus words for "acidify":
      acetify, acidulate, alkalify, alkalize, borate, carbonate,
      catalyze, chemical, chlorinate, electrolyze, ferment,
      homopolymerize, hydrate, hydrogenate, hydroxylate, isomerize,
      nitrate, oxidize, pepsinate, peroxidize, phosphatize, polymerize,
      reduce, sour, sulfate, sulfatize, sulfonate, turn sour, work

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