The Collaborative International Dictionary of English v.0.48:

Transform \Trans*form"\, v. t. [imp. & p. p. Transformed; p.
   pr. & vb. n. Transforming.] [L. transformare,
   transformatum; trans across, over + formare to from: cf. F.
   transformer. See Form, v. t.]
   1. To change the form of; to change in shape or appearance;
      to metamorphose; as, a caterpillar is ultimately
      transformed into a butterfly.
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            Love may transform me to an oyster.   --Shak.
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   2. To change into another substance; to transmute; as, the
      alchemists sought to transform lead into gold.
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   3. To change in nature, disposition, heart, character, or the
      like; to convert.
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            Be ye transformed by the renewing of your mind.
                                                  --Rom. xii. 2.
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   4. (Math.) To change, as an algebraic expression or
      geometrical figure, into another from without altering its
      value.
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The Collaborative International Dictionary of English v.0.48:

Transform \Trans*form"\, v. i.
   To be changed in form; to be metamorphosed. [R.]
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         His hair transforms to down.             --Addison.
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WordNet (r) 3.0 (2006):

transform
    v 1: subject to a mathematical transformation
    2: change or alter in form, appearance, or nature; "This
       experience transformed her completely"; "She transformed the
       clay into a beautiful sculpture"; "transubstantiate one
       element into another" [syn: transform, transmute,
       transubstantiate]
    3: change in outward structure or looks; "He transformed into a
       monster"; "The salesman metamorphosed into an ugly beetle"
       [syn: transform, transmute, metamorphose]
    4: change from one form or medium into another; "Braque
       translated collage into oil" [syn: translate, transform]
    5: convert (one form of energy) to another; "transform energy to
       light"
    6: change (a bacterial cell) into a genetically distinct cell by
       the introduction of DNA from another cell of the same or
       closely related species
    7: increase or decrease (an alternating current or voltage)