Why do we label some ideas as " esoteric "? Explore the origins of this term and its use in philosophy, art, and spirituality. Over time, the word " esoteric " has come to mean anything that is understood or appreciated by only a small group of people with specialized knowledge. It's often used to describe complex or obscure subjects, like advanced mathematics or philosophy. 3 meanings : 1. restricted to or intended for an enlightened or initiated minority, esp because of abstruseness or obscurity →.... Click for more definitions. ESOTERIC meaning : 1. very unusual and understood or liked by only a small number of people, especially those with…. Learn more.