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The mathematical equivalent of a vending machine: each input produces only one output.
Like the concept of set, the concept of a function is one of the most fundamental ideas in all of mathematics, particularly in calculus—which depends on functions and their graphs.
by MathPlus August 26, 2016
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If you're from San Diego, you know what a function is.

For you outsides, a function is a kickback, party, where people be swanging, getting faded and fucked up. An infamous place for fights and drama.
Person 1: You going to the function tomorrow?
Person 2: Nawh, my girl don't like it when I go to functions, she don't trust me.
by SExSD October 21, 2011
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1. a tag that is programmer defined within a program to be used again later in the program.
2. syn. subroutine
1. The programmer made a function to display text.
by Master Quark March 28, 2005
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a girl who has slept with more than two members of a fraternity.
Julie is a TKE function - she slept with both Joe and Steve.
by lauren/tree May 29, 2005
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