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molecular mass
noun
: the mass of a molecule that is equal to the sum of the masses of all the atoms contained in the molecule
Examples of molecular mass in a Sentence
Recent Examples on the Web
While Delta 8 and Delta 9 THC share a very similar chemical structure, there is one major difference: The molecular mass.
—Amber Smith, Discover Magazine, 19 Oct. 2022
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Word History
First Known Use
1873, in the meaning defined above
Dictionary Entries Near molecular mass
Cite this Entry
“Molecular mass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular%20mass. Accessed 24 Dec. 2024.
Kids Definition
molecular mass
noun
: the mass of a molecule that is equal to the sum of the masses of all the atoms contained in the molecule's formula
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