from The Century Dictionary.

  • noun One who recognizes and proves the identity of others, especially of criminals.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Someone who identifies; a person who establishes the identity of.
  • noun Something that identifies or uniquely points to something or someone else.
  • noun A guidebook that helps determine the specific class of an object (such as a mushroom, herb, fish, bird, drug, or mineral), or its individual identity (such as that of a star).
  • noun programming, operating systems A formal name used in source code to refer to a variable, function, procedure, package, etc. or in an operating system to refer to a process, user, group, etc.
  • noun databases A primary key.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a symbol that establishes the identity of the one bearing it


from Wiktionary, Creative Commons Attribution/Share-Alike License

to identify + -er


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