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molecular formula
noun
: 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
The molecular formula of this detergent is designed to penetrate synthetic materials, to help get — and keep — your activewear clean.
—Elizabeth Marino, Peoplemag, 14 Mar. 2023
Every finite group has a unique molecular formula of this kind — a collection of simple groups from which it is made.
—Quanta Magazine, 22 Sep. 2017
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'molecular formula.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1861, in the meaning defined above
Time Traveler
The first known use of molecular formula was
in 1861
Articles Related to molecular formula
Dictionary Entries Near molecular formula
Cite this Entry
“Molecular formula.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular%20formula. Accessed 5 Nov. 2024.
Kids Definition
molecular formula
noun
: a chemical formula that gives the total number of atoms of each element present in a molecule
Medical Definition
molecular formula
noun
: 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
More from Merriam-Webster on molecular formula
Britannica.com: Encyclopedia article about molecular formula
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