
1) Computer security procedure
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https://www.crosswordclues.com/clue/setuid

In mathematics, a setoid (also called an E-set) is a set (or type) equipped with an equivalence relation. Setoids are studied especially in proof theory and in type-theoretic foundations of mathematics. Often in mathematics, when one defines an equivalence relation on a set, one immediately forms the quotient set (turning equivalence into equality...
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http://en.wikipedia.org/wiki/Setoid

setuid and setgid (short for `set user ID upon execution` and `set group ID upon execution`, respectively) are Unix access rights flags that allow users to run an executable with the permissions of the executable`s owner or group respectively and to change behaviour in directories. They are often used to allow users on a computer system to ru...
Found on
http://en.wikipedia.org/wiki/Setuid
No exact match found.