preclusion

from WordNet (r) 3.0 (2006)

preclusion
    n 1: the act of preventing something by anticipating and
         disposing of it effectively [syn: {obviation},
         {forestalling}, {preclusion}]

from The Collaborative International Dictionary of English v.0.48

Preclusion \Pre*clu"sion\, n. [L. praeclusio. See {Preclude}.]
   The act of precluding, or the state of being precluded; a
   shutting out.
   [1913 Webster]

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