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formula

 
 
/ˈfɔːmjələ/ noun [C] (plural formulas, formulae)

Definition

METHOD a plan or method that is used to achieve something: There's no magic formula for success.
RULE a set of letters, numbers, or symbols that are used to express a mathematical or scientific rule
LIST a list of the substances that something is made of
(Definition of formula noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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