Conceptual necessity

Conceptual necessity refers to the idea that certain statements, truths, or propositions are necessarily true based on the meanings of the concepts involved, rather than on empirical observation or contingent facts about the world. In other words, a conceptually necessary statement is one that must be true simply because of the way the terms are defined. For example, the statement "All bachelors are unmarried" is conceptually necessary because, by definition, a bachelor is an unmarried man.