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

contestation \con`testa"tion\, n. l. contestatio testimony:
   cf. f. contestation a contesting.
   1. the act of contesting; emulation; rivalry; strife;
      dispute. "loverlike contestation." --milton.
      1913 webster

            after years spent in domestic, unsociable
            contestations, she found means to withdraw.
                                                  --clarendon.
      1913 webster

   2. proof by witness; attestation; testimony. obs.
      1913 webster

            a solemn contestation ratified on the part of god.
                                                  --barrow.
      1913 webster

[2] : WordNet (r) 2.0

contestation
     n : a contentious speech act; a dispute where there is strong
         disagreement; "they were involved in a violent argument"
         syn: controversy, contention, disputation, disceptation,
          tilt, argument, arguing
see also:
controversy contention disputation disceptation tilt argument 
arguing 

Contestation >> C Words
Contestation, definition of term: Contestation
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