The Collaborative International Dictionary of English v.0.48:

Condition \Con*di"tion\, v. i. [imp. & p. p. Conditioned; p.
   pr. & vb. n. Conditioning.]
   1. To make terms; to stipulate.
      [1913 Webster]

            Pay me back my credit,
            And I'll condition with ye.           --Beau. & Fl.
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   2. (Metaph.) To impose upon an object those relations or
      conditions without which knowledge and thought are alleged
      to be impossible.
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            To think of a thing is to condition.  --Sir W.
                                                  Hamilton.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Conditioned \Con*di"tioned\, a.
   1. Surrounded; circumstanced; in a certain state or
      condition, as of property or health; as, a well
      conditioned man.
      [1913 Webster]

            The best conditioned and unwearied spirit. --Shak.
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   2. Having, or known under or by, conditions or relations; not
      independent; not absolute.
      [1913 Webster]

            Under these, thought is possible only in the
            conditioned interval.                 --Sir W.
                                                  Hamilton.
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   3. made softer by washing with a chemical agent called a
      conditioner[3].
      [PJC]

WordNet (r) 3.0 (2006):

conditioned
    adj 1: established by conditioning or learning; "a conditioned
           response" [syn: conditioned, learned] [ant: innate,
           unconditioned, unlearned]
    2: physically fit; "exercised daily to keep herself in
       condition" [syn: conditioned, in condition(p)]