The symbol ≡ (triple bar, ) is used in science and mathematics with several different meanings. It may refer to the following:

Mathematics Definition: Identity of a variable and a mathematical expression because of the definition of the variable Logical biconditional, in logic (if and only if) Modular arithmetic, a ≡ b (mod m) General equivalence relation, often denoted using a triple bar

Chemistry Triple bond, a type of covalent bond between two atoms

Computing Hamburger button, often used for drop-down menus Symbol for the line feed character in ISO 2047

See also

≅, a symbol sometimes used to show an approximate value, ≅ a symbol sometimes used to show geometric congruence Ξ, capital letter Xi of the Greek alphabet 三, Chinese numeral for the number 3 Glossary of mathematical symbols Tesla Model 3, whose logo originally stylized the digit 3 as three horizontal bars III (disambiguation), three letter Is in a row