≡

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

Mathematics

• Identity (mathematics), identity of two mathematical expressions
• Logical biconditional, in logic (if and only if)
• Modular arithmetic, a ≡ b (mod m)
• 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

Vehicles

• Tesla Model 3, stylized symbol

See also

• ≅ (disambiguation), the symbol for a congruence relation in algebra
• ☰, Qián, the trigram of the I Ching that consists of three unbroken lines
• Ξ, capital letter Xi of the Greek alphabet
• List of mathematical symbols