›the exact chemical parts that a mixture consists of: [C]The company announced that it was changing its soft-drink formula to make it sweeter.›Formula is a liquid food mixture that is fed to babies instead of mother’s milk.›A formula is also any plan or method for doing something well: [Cusually sing]The formula for success in business, he said, is a willingness to take risks.›mathematicsA formula is an equation (= set of numbers and letters representing two equal amounts) that shows how one amount depends on one or more other amounts.