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English definition of “formula”

formula

noun (IN CHEMISTRY)    /ˈfɔː.mjʊ.lə/ US  /ˈfɔːr-/ (plural formulas or formulae)
a series of letters and symbols that show what substances make up a particular chemical element or compound : We had to learn chemical formulae at school, but I can only remember H2O for water.
(Definition of formula noun (IN CHEMISTRY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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