Source : Webster's Revised Unabridged Dictionary (1913)

Mix \Mix\, v. i.
   1. To become united into a compound; to be blended
      promiscuously together.

   2. To associate; to mingle.

            He had mixed Again in fancied safety with his kind.
                                                  --Byron.

Mix \Mix\, v. t. [imp. & p. p. {Mixed}(less properly {Mixt}); p.
   pr. & vb. n. {Mixing}.] [AS. miscan; akin to OHG. misken, G.
   mischen, Russ. mieshate, W. mysgu, Gael. measg, L. miscere,
   mixtum, Gr. ?, ?, Skr. mi[,c]ra mixed. The English word has
   been influenced by L. miscere, mixtum (cf. {Mixture}), and
   even the AS. miscan may have been borrowed fr. L. miscere.
   Cf. {Admix}, {Mash} to bruise, {Meddle}.]
   1. To cause a promiscuous interpenetration of the parts of,
      as of two or more substances with each other, or of one
      substance with others; to unite or blend into one mass or
      compound, as by stirring together; to mingle; to blend;
      as, to mix flour and salt; to mix wines.

            Fair persuasions mixed with sugared words. --Shak.

   2. To unite with in company; to join; to associate.

            Ephraim, he hath mixed himself among the people.
                                                  --Hos. vii. 8.

   3. To form by mingling; to produce by the stirring together
      of ingredients; to compound of different parts.

            Hast thou no poison mixed?            --Shak.

            I have chosen an argument mixed of religious and
            civil considerations.                 --Bacon.

Source : WordNet®

mix
     n 1: a commercially prepared mixture of dry ingredients [syn: {premix}]
     2: an event that combines things in a mixture; "a gradual
        mixture of cultures" [syn: {mixture}]
     3: the act of mixing together; "paste made by a mix of flour
        and water"; "the mixing of sound channels in the recording
        studio" [syn: {commixture}, {admixture}, {mixture}, {intermixture},
         {mixing}]

mix
     v 1: mix together different elements; "The colors blend well"
          [syn: {blend}, {flux}, {conflate}, {commingle}, {immix},
           {fuse}, {coalesce}, {meld}, {combine}, {merge}]
     2: open (a place) to members of all races and ethnic groups;
        "This school is completely desegregated" [syn: {desegregate},
         {integrate}] [ant: {segregate}]
     3: to bring or combine together or with something else;
        "resourcefully he mingled music and dance" [syn: {mingle},
         {commix}, {unify}, {amalgamate}]
     4: as of electronic signals; "mixing sounds"
     5: add as an additional element or part; "mix water into the
        drink" [syn: {mix in}]
     6: mix so as to make a random order or arrangement; "shuffle
        the cards" [syn: {shuffle}, {ruffle}]

Source : Free On-Line Dictionary of Computing

MIX
     
        Knuth's hypothetical machine, used in The Art of Computer
        Programming v.1, Donald Knuth, A-W 1969.