molecular formula


Definition of molecular formula

: a chemical formula that gives the total number of atoms of each element in each molecule of a substance — compare structural formula

Examples of molecular formula in a Sentence

Recent Examples on the Web Every finite group has a unique molecular formula of this kind — a collection of simple groups from which it is made. Quanta Magazine, "Moonshine Link Discovered for Pariah Symmetries," 22 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'molecular formula.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of molecular formula

1861, in the meaning defined above

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The first known use of molecular formula was in 1861

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Cite this Entry

“Molecular formula.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2020.

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molecular formula


Medical Definition of molecular formula

: a chemical formula for a compound existing as discrete molecules that gives the total number of atoms of each element in a molecule the molecular formula for water is H2O — see structural formula — compare empirical formula

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