The Collaborative International Dictionary of English v.0.48:

Determine \De*ter"mine\, v. t. [imp. & p. p. Determined; p.
   pr. & vb. n. Determining.] [F. d['e]terminer, L.
   determinare, determinatum; de + terminare limit, terminus
   limit. See Term.]
   1. To fix the boundaries of; to mark off and separate.
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            [God] hath determined the times before appointed.
                                                  --Acts xvii.
                                                  26.
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   2. To set bounds to; to fix the determination of; to limit;
      to bound; to bring to an end; to finish.
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            The knowledge of men hitherto hath been determined
            by the view or sight.                 --Bacon.
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            Now, where is he that will not stay so long
            Till his friend sickness hath determined me? --Shak.
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   3. To fix the form or character of; to shape; to prescribe
      imperatively; to regulate; to settle.
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            The character of the soul is determined by the
            character of its God.                 --J. Edwards.
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            Something divinely beautiful . . . that at some time
            or other might influence or even determine her
            course of life.                       --W. Black.
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   4. To fix the course of; to impel and direct; -- with a
      remoter object preceded by to; as, another's will
      determined me to this course.
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   5. To ascertain definitely; to find out the specific
      character or name of; to assign to its true place in a
      system; as, to determine an unknown or a newly discovered
      plant or its name.
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   6. To bring to a conclusion, as a question or controversy; to
      settle authoritative or judicial sentence; to decide; as,
      the court has determined the cause.
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   7. To resolve on; to have a fixed intention of; also, to
      cause to come to a conclusion or decision; to lead; as,
      this determined him to go immediately.
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   8. (Logic) To define or limit by adding a differentia.
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   9. (Physical Sciences) To ascertain the presence, quantity,
      or amount of; as, to determine the parallax; to determine
      the salt in sea water.
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WordNet (r) 3.0 (2006):

determining
    adj 1: having the power or quality of deciding; "the crucial
           experiment"; "cast the deciding vote"; "the determinative
           (or determinant) battle" [syn: deciding(a),
           determinant, determinative, determining(a)]