Listable

Listable is an attribute that can be assigned to a symbol f to indicate that the function f should automatically be threaded over lists that appear as its arguments.

Examples

Define a listable function:

SetAttributes[myFunc, Listable]
myFunc[x_] := x^2
myFunc[{1, 2, 3}]
(* {1, 4, 9} *)

Built-in listable functions:

Sin[{0, Pi/2, Pi}]
(* {0, 1, 0} *)

Please visit the official Wolfram Language Reference for more details.