alias /ˈeɪlɪəs/

a

I. adverb

used to indicate that a named person is also known or more familiar under another specified name

Eric Blair, alias George Orwell.
II. noun

1. a false or assumed identity

a spy operating under the alias Barsad.
2.
[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.
3.
[Physics]
[Telecommunications] each of a set of signal frequencies which, 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.
III. verb [with obj.]

1.
[Physics]
[Telecommunications] misidentify (a signal frequency), introducing distortion or error.

fringes at higher spatial frequency are aliased by the sensor.
– origin late Middle English: from Latin, ‘at another time, otherwise’.

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