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
With that in mind, a formula with two different molecular weights of hyaluronic acid can penetrate more optimally and promote longer-lasting hydration.
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Jessie Quinn, People.com, 1 Nov. 2024
There are four different molecular weights of hyaluronic acid in this formula, meaning the ingredient can penetrate the skin to different depths and create a volumizing effect at multiple levels of the skin.
—Emily Orofino, Allure, 29 Oct. 2024
Its ultra-fine mist is infused with niacinamide for a shine-free finish and sodium hyaluronate—a derivative of hyaluronic acid that's smaller in molecular weight—to penetrate the surface layer of the skin for a hydrated, dewy finish.
—Jennifer Hussein, Allure, 3 Oct. 2024
Other larger peptides are able to repair damage at the surface of the cuticle, but a smaller molecular weight allows our peptides to penetrate all the way into the medulla, or the deepest parts of the hair’s core.
—Celia Shatzman, Forbes, 1 Oct. 2024
See all Example Sentences for molecular weight 
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Jessie Quinn, People.com, 1 Nov. 2024
There are four different molecular weights of hyaluronic acid in this formula, meaning the ingredient can penetrate the skin to different depths and create a volumizing effect at multiple levels of the skin.
—Emily Orofino, Allure, 29 Oct. 2024
Its ultra-fine mist is infused with niacinamide for a shine-free finish and sodium hyaluronate—a derivative of hyaluronic acid that's smaller in molecular weight—to penetrate the surface layer of the skin for a hydrated, dewy finish.
—Jennifer Hussein, Allure, 3 Oct. 2024
Other larger peptides are able to repair damage at the surface of the cuticle, but a smaller molecular weight allows our peptides to penetrate all the way into the medulla, or the deepest parts of the hair’s core.
—Celia Shatzman, Forbes, 1 Oct. 2024
See all Example Sentences for molecular weight
Dictionary Entries Near molecular weight
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“Molecular weight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular%20weight. Accessed 14 Nov. 2024.
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