discriminator

from WordNet (r) 3.0 (2006)
discriminator
    n 1: a person who (or that which) differentiates [syn:
         {differentiator}, {discriminator}]
from The Collaborative International Dictionary of English v.0.48
Discriminator \Dis*crim"i*na`tor\, n. [LL.]
   One who discriminates.
   [1913 Webster]
antiflux / dictionary / discriminator
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