IPA: //baɪˈdʒɛkʃən//
KK: /baɪˈdʒɛkʃən/
A type of function in mathematics where each input is paired with exactly one unique output, and every possible output is paired with an input.
In mathematics, a bijection ensures that every element in the first set corresponds to one and only one element in the second set.
Bijection → It is formed from "bi-" (meaning two) and "jectio" (from "jacere", meaning to throw). The term describes a function that pairs each element of one set with exactly one element of another set, thus creating a two-way correspondence.
Think of 'two' ('bi-') things being 'thrown' together ('jectio') in a way that matches each one perfectly.