molecular weight
noun
: the average mass of a molecule of a compound compared to ¹/₁₂ the mass of carbon 12 and calculated as the sum of the atomic weights of the constituent atoms
Examples of molecular weight in a Sentence
Recent Examples on the Web
Small molecule drugs are made of chemicals that have low molecular weight, while biologic medicines are derived from living sources such as animals or humans.
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Annika Kim Constantino, CNBC, 15 Aug. 2024
Each has a different molecular weight, so the product can instantly revive dry, parched skin and provide additional moisture throughout the day (or night).
—Devon Abelman, Allure, 12 Aug. 2024
The components are separated based on their molecular weight, size, and density.
—Suchandrima Bhowmik, Health, 8 Aug. 2024
Hyaluronic acid with a smaller molecular weight can absorb deeper, and larger molecules penetrate more superficially.
—Venus Wong, refinery29.com, 6 Aug. 2024
See all Example Sentences for molecular weight 
Annika Kim Constantino, CNBC, 15 Aug. 2024
Each has a different molecular weight, so the product can instantly revive dry, parched skin and provide additional moisture throughout the day (or night).
—Devon Abelman, Allure, 12 Aug. 2024
The components are separated based on their molecular weight, size, and density.
—Suchandrima Bhowmik, Health, 8 Aug. 2024
Hyaluronic acid with a smaller molecular weight can absorb deeper, and larger molecules penetrate more superficially.
—Venus Wong, refinery29.com, 6 Aug. 2024
See all Example Sentences for molecular weight
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'molecular weight.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Molecular weight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular%20weight. Accessed 20 Sep. 2024.
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