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Definition of alias
used to indicate that a named person is also known or more familiar under another specified name:Eric Blair, alias George Orwell informal indicating another term or synonym:the catfish—alias bullhead—is a mighty tasty fry-up
a false or assumed identity:a spy operating under the alias Barsad Computing an alternative name or label that refers to a file, command, address, or other item, and can be used to locate or access it. Telecommunications each of a set of signal frequencies that, when sampled at a given uniform rate, would give the same set of sampled values, and thus might be incorrectly substituted for one another when reconstructing the original signal.
verb [with object] (usually be aliased) Physics & Telecommunications
misidentify (a signal frequency), introducing distortion or error.