Difference Between

Difference Between at U+224F is a mathematical relation symbol used to state that one expression represents the difference between two quantities or objects. It sits in the Mathematical Operators block and functions as a specialized comparison-style operator rather than a punctuation mark or ordinary equals sign. In practice, this symbol is most likely to appear in formal mathematics, technical standards, and carefully typeset logic or algebra notes where an author wants a compact “is the difference between” relation. For example, a definition may use A ≏ B to indicate a relationship based on subtraction, separation, or distinction, depending on the convention established in that text. Its usage is much less widespread than the ordinary minus sign, equals sign, not-equal sign, or set-difference notation, so the meaning should not be assumed without context. In many documents, writers instead spell out “the difference between,” use a minus expression such as x − y, or use set notation such as A \ B, making ≏ mostly a specialist symbol in mathematical typography.