Difference Between Formulas and Formulae
The words ‘formulas’ and ‘formulae’ are both plurals of the word ‘formula’. ‘Formula’ comes from Latin. It originally meant a number of things that had to do with some sort of structure, such as ‘shape’, ‘form’, ‘pattern’, ‘rule’, ‘lawsuit’, and so on. ‘Formula’ was a diminutive of ‘forma’, which means that they meant much the same thing, but a formula was a smaller version of a forma. The word ‘forma’ was later incorporated into English as the word ‘form’.