tau
/taʊ/
noun
- The 19th letter of the Greek alphabet (Τ, τ).
- She wrote a lowercase tau on the board to represent the variable.
- In fraternity names, tau is a common letter, as in Tau Kappa Epsilon.
- The Greek letter tau is often used in mathematics to represent time constants.
- A symbol used in physics and mathematics for various quantities, such as torque, shear stress, or time constant.
- The time constant of an RC circuit is denoted by the Greek letter tau.
- Engineers use tau to calculate shear stress in materials.
- In physics, tau often represents torque in rotational motion equations.