formula

Any mathematical rule expressed symbolically.

x=(-b±√)/(2a) is a formula for finding the roots of the quadratic equation ax² + bx + c = 0.

A symbolic expression of the structure of a compound.

H₂O is the formula for water.

A plan or method for dealing with a problem or for achieving a result.

The company's winning formula includes excellent service and quality products.

Shakespeare has gone back to the formula of last season, by encouraging his players to press high up the pitch and restoring Shinji Okazaki to the starting XI to scurry around between midfield and attack.

A formulation; a prescription; a mixture or solution made in a prescribed manner; the identity and quantities of ingredients of such a mixture.

The formula of the rocket fuel has not been revealed.

A fixed phrase or set of words intended to be interpreted non-literally, typically used attitudinally or as part of convention; a formulation.

Avoid the typical epistolic formalae, such as "Kind regards".