discretefunction
nounA discrete function is a math rule that gives an answer only for separate, whole steps, not for everything in between.
The number of kids in each class is a discrete function because you can only have whole kids, not half a kid.
OTHER MEANINGS
2. A function whose input values come from a set of separate points rather than a continuous range.
A sequence is a discrete function defined only on the counting numbers 1, 2, 3, and so on.
3. A function that produces only separate, countable output values.
The score in a game is a discrete function because it jumps from 10 to 11 without passing through 10.5.
4. In computing, a function that works on distinct, separate data values rather than smooth signals.
The program used a discrete function to count how many times each word appeared.