Definition: "not equal to."

Background: In most popular programming languages, "!" belongs to a class of operators known as "logic operators." Basically, it just stands for "not", "opposite", or "false", depending on what the context is. Two other operators are in this class: "||" for "or", and "&&" for "and".

"!=" belongs to another class of operators called "comparison operators." Also in this class are things like "==" (equals), ">=" (greater than or equal to), "<" (less than), etc.
5 != 6 :: Five (is) not equal to Six.

Short != Tall :: Short (is) not equal to Tall
by Nikkki November 23, 2004
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Used in various programming languages to denote "Not-Equal".
Justin != Josh.

A != B.

1 != 3.
by Psycho_85602 December 7, 2007
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