The Collaborative International Dictionary of English v.0.48:

Objectivity \Ob`jec*tiv"i*ty\, n. [Cf. F. objectivit['e].]
   The state, quality, or relation of being objective; character
   of the object or of the objective.
   [1913 Webster]

         The calm, the cheerfulness, the disinterested
         objectivity have disappeared [in the life of the
         Greeks].                                 --M. Arnold.
   [1913 Webster]

WordNet (r) 3.0 (2006):

objectivity
    n 1: judgment based on observable phenomena and uninfluenced by
         emotions or personal prejudices [syn: objectivity,
         objectiveness]

Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "objectivity":
   anesthesia, autism, catatonia, chill, chilliness, cold blood,
   cold heart, coldheartedness, coldness, coolness, deadpan,
   detachment, discreteness, disinterest, disinterestedness,
   dispassion, dispassionateness, dullness, emotional deadness,
   emotionlessness, equitability, equitableness, evenhandedness,
   externality, extraneousness, extrinsicality, fair-mindedness,
   fairness, foreignness, frigidity, frostiness, heartlessness,
   iciness, immovability, impartiality, impassibility, impassiveness,
   impassivity, impersonality, indifference, inexcitability, justness,
   lack of affect, lack of feeling, lack of touch, neutrality,
   nonsubjectivity, obtuseness, otherness, outwardness,
   passionlessness, poker face, self-absorption, soullessness,
   spiritlessness, straight face, unbiasedness, unemotionalism,
   unexcitability, unfeeling, unfeelingness, unimpressibility,
   unimpressionableness, unopinionatedness, unpassionateness,
   unprejudicedness, unresponsiveness, unsusceptibility,
   unsympatheticness, untouchability, withdrawal