Cancel or cancellation may refer to:
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Flight cancellation and delay
A flight delay is when an airline flight takes off and/or lands later than its scheduled time. The United States Federal Aviation Administration (FAA) considers a flight to be delayed when it is 15 minutes later than its scheduled time. A cancella ...
, not operating a scheduled flight
Sociology
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Cancel culture
Cancel culture, or rarely also known as call-out culture, is a phrase contemporary to the late 2010s and early 2020s used to refer to a form of ostracism in which someone is thrust out of social or professional circles—whether it be online, on ...
, boycott and ostracism calling out offensive behavior on social media or in real life
Technology and science
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Cancel leaf, a bibliographic term for replaced leaves in printed books
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Cancellation property, the mathematical property if ''a''×''b'' = ''a''×''c'' then ''b'' = ''c''
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Cancelling out, a technique for simplifying mathematical expressions
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Catastrophic cancellation
In numerical analysis, catastrophic cancellation is the phenomenon that subtracting good approximations to two nearby numbers may yield a very bad approximation to the difference of the original numbers.
For example, if there are two studs, one L_ ...
, numerical error arising from subtracting approximations to nearby numbers
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Noise cancellation, a method for reducing unwanted sound
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Phase cancellation, the effect of two waves that are out of phase with each other being summed
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Cancel message, a special message used to remove Usenet articles posted to news servers
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Cancel character
In telecommunication, the term cancel character has the following meanings:
#A control character ("CAN", "Cancel", U+0018, or ^X) used to indicate that the data with which it is associated are in error or are to be disregarded. Exact meaning ca ...
, an indication that transmitted data are in error or are to be disregarded
*Resolution_(logic)#Resolution_rule, Resolution rule, in propositional logic a valid inference rule that produces a new clause by two clauses containing complementary literals.
*Cancellable (linguistics), a property of implicatures and presuppositions
Entertainment
*Cancellation (television), the termination of a television series
*Cancelled (South Park), "Cancelled" (''South Park''), a 2003 episode of the TV series ''South Park''
* Canceled (Nikita), "Canceled" (''Nikita''), a 2013 episode of ''Nikita''
*"Canceled (song), a 2020 song by Larray
People and characters
*Robinson Cancel (born 1976), baseball catcher
*Rafael Cancel Miranda (born 1930), political activist
*An alternate name for the archangel Camael
Government
*Cancellation of removal, a form of immigration relief available to aliens in the United States who be otherwise inadmissible or deportable
* Cancellation of Nationality
See also
* Mitigation
* Nullification (disambiguation)
{{disambiguation