[1] : The Collaborative International Dictionary of English v.0.48

purify \pu"rify\, v. i.
   to grow or become pure or clear.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

purify \pu"rify\ p=u"ri^fimac, v. t. imp.  p. p.
   purified p=u"ri^fimacd; p. pr.  vb. n.
   purifying p=u"ri^fimac"i^ng. f. purifier, l.
   purificare; purus pure + -ficare in comp. to make. see
   pure, and -fy.
   1. to make pure or clear from material defilement, admixture,
      or imperfection; to free from extraneous or noxious
      matter; as, to purify liquors or metals; to purify the
      blood; to purify the air.
      1913 webster

   2. hence, in figurative uses:
      a to free from guilt or moral defilement; as, to purify
          the heart.
          1913 webster

                and fit them so
                purified to receive him pure.     --milton.
          1913 webster
      b to free from ceremonial or legal defilement.
          1913 webster

                and moses took the blood, and put it upon the
                horns of the altar, . . . and purified the
                altar.                            --lev. viii.
                                                  15.
          1913 webster

                purify both yourselves and your captives. --
                                                  num. xxxi. 19.
          1913 webster
      c to free from improprieties or barbarisms; as, to
          purify a language. --sprat.
          1913 webster
see also:
purified purifying pure -fy 

[3] : WordNet (r) 2.0

purify
     v 1: remove impurities from, increase the concentration of, and
          separate through the process of distillation; "purify
          the water" syn: sublimate, make pure, distill
     2: make pure or free from sin or guilt; "he left the monastery
        purified" syn: purge, sanctify
     3: become clean or pure or free of guilt and sin; "the hippies
        came to the ashram in order to purify"
     also: purified
see also:
sublimate make pure distill purge sanctify purified 

[4] : Moby Thesaurus II by Grady Ward, 1.0

125 moby thesaurus words for "purify":
   abate, abrade, absolve, abstract, acquit, atone, bate, beatify,
   bleach, bless, bolt, bowdlerize, canonize, chasten, clarify, clean,
   clean out, clean up, cleanse, clear, clear out, consecrate,
   curtail, decontaminate, decrassify, decrease, dedicate, deduct,
   delouse, depreciate, depurate, derogate, deterge, detract, devote,
   diminish, disinfect, disparage, distill, drain, dry-clean, dust,
   dust off, eat away, edulcorate, elute, enshrine, erode,
   essentialize, exalt, exculpate, excuse, exonerate, expiate,
   expurgate, extract, file away, filter, filtrate, forgive, freshen,
   fumigate, glorify, hallow, impair, leach, lessen, lixiviate,
   lustrate, narrow, oversimplify, pardon, percolate, purge, rectify,
   redeem, reduce, reduce to elements, refine, reform, remit, remove,
   restrain, retrench, rub away, saint, sanctify, sanitize, scavenge,
   screen, separate, set apart, shorten, shrive, sieve, sift,
   simplify, spiritualize, spruce, steam-clean, strain, streamline,
   strip down, subduct, sublimate, sublime, subtract, sweep out,
   sweeten, take away, take from, thin, thin out, tidy, try, wash,
   wear away, weed, whiten, winnow, wipe, wipe off, wipe out, wipe up,
   withdraw

[5] : The Free On-line Dictionary of Computing (27 SEP 03)

purify
     
        a debugging tool from pure software.
     
     

Purify >> P Words
Purify, definition of term: Purify
purify_pag1.html