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The Collaborative International Dictionary
Distinguisher

Distinguisher \Dis*tin"guish*er\, n.

  1. One who, or that which, distinguishes or separates one thing from another by marks of diversity.
    --Sir T. Browne.

  2. One who discerns accurately the difference of things; a nice or judicious observer.
    --Dryden.

Wiktionary
distinguisher

n. One who, or that which, distinguishes.

Wikipedia
Distinguisher

Distinguisher may refer to:

  • Route distinguisher, an address qualifier used to distinguish Virtual Private Network (VPN) routes
  • Distinguishing attack, a cryptographic attack that distinguishes a ciphertext from truly random data