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English Lexicon

Chemical formula

/ˈkɛm.ɪ.kəl ˈfɔːr.mjʊ.lə/
nounCEFR B2 (Upper)Top #8500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A mathematical or symbolic representation of the chemical composition of a substance using element symbols and numerical subscripts.

    "The chemical formula for water is H2O."
  2. 2

    A concise notation indicating the types and proportions of atoms in a chemical compound.

    "Students must learn how to balance equations using the correct chemical formula."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term combines 'chemical', derived from alchemy and the Greek 'khēmia', with 'formula', the diminutive of the Latin 'forma' meaning shape or pattern. It emerged in the 19th century alongside the development of modern chemical nomenclature to provide a concise way of expressing elemental composition.

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