Economists use the concept of Utility to measure the satisfactions a person gets from the use or consumption of goods and services.
It´s usage has evolved over time. At first the term was introduced by moral philosopher within the theory of utilitarianism as a way to measure pleasure or satisfaction. But the term has been readapted with the neoclassical economies as a utility function and represents the preference of a consumer over a choice set.
I hope this answer help you.
