The Collaborative International Dictionary of English v.0.48:

Practicality \Prac`ti*cal"i*ty\, n.
   The quality or state of being practical; practicalness.
   [1913 Webster]

WordNet (r) 3.0 (2006):

practicality
    n 1: concerned with actual use rather than theoretical
         possibilities [ant: impracticality]

Moby Thesaurus II by Grady Ward, 1.0:

86 Moby Thesaurus words for "practicality":
   achievability, actability, adaptability, applicability,
   attainability, availability, balance, common sense, compassability,
   convenience, cool head, coolheadedness, coolness,
   down-to-earthness, ductility, due sense of, earthiness,
   effectiveness, efficacy, efficiency, feasibility, flexibility,
   freedom from illusion, functionality, good sense, handiness,
   hardheadedness, helpfulness, horse sense, lack of feelings,
   level head, levelheadedness, malleability, manageability,
   manageableness, maneuverability, matter-of-factness, negotiability,
   operability, performability, plain sense, pliability, pliancy,
   positivism, practicability, practical mind, practical utility,
   practical wisdom, practical-mindedness, practicalness,
   pragmaticism, pragmatism, profitability, rationality, realism,
   realizability, reason, reasonableness, saneness, sanity, scientism,
   secularism, sense, sensibleness, serviceability, sober-mindedness,
   soberness, sobriety, soundness, superability, surmountability,
   unidealism, unromanticalness, unsentimentality, untroublesomeness,
   usability, use, usefulness, utility, utilizability, viability,
   viableness, wieldableness, wieldiness, workability, worldliness