How to Use molecular weight in a Sentence

molecular weight

noun
  • That’s a more buoyant air mass, and that’s due to the molecular weight of a wet air mass versus a dry one.
    Chris Bianchi, The Denver Post, 3 Aug. 2019
  • The story of the layers is told by the molecular weight of the elements contained in them.
    Yereth Rosen, Alaska Dispatch News, 24 Sep. 2017
  • Their results showed that the brown algae extract, which had the lowest molecular weight, did the best.
    Sarah Jacoby, SELF, 13 Aug. 2019
  • Delta 8 has a smaller molecular weight than Delta 9 THC.
    Amber Smith, Discover Magazine, 19 Oct. 2022
  • The point of this was twofold: the smaller molecular weight allows the product to penetrate deeper into the hair strand.
    Megan Decker, refinery29.com, 31 May 2023
  • But hydrogen is a wily gas, with a molecular weight as light as molecules come.
    IEEE Spectrum, 31 July 2014
  • So, all small molecules have low molecular weight, but not all small molecules are drugs by any means.
    Caroline Delbert, Popular Mechanics, 6 July 2021
  • Dyneema, which is an ultra-high molecular weight polyethylene, is now used in Levi’s.
    Steff Yotka, Vogue, 3 Apr. 2018
  • What separates these drops from the crowd is the inclusion of niacinamide and dual molecular weight hyaluronic acid, which pull their weight to even the skin tone, smooth over fine lines and give the skin a more youthful glow.
    Alyssa Brascia, Peoplemag, 24 Aug. 2022
  • Most new antibiotics are small molecules—those that have molecular weights of less than 600 daltons.
    Beth Mole, Ars Technica, 5 Jan. 2024
  • The team could measure this aboard the aircraft with a device called a mass spectrometer, which calculates molecular weight.
    Matt Simon, Wired, 3 Nov. 2020
  • The scientists found that people with Parkinson’s have certain lipids of high molecular weight in their sebum—an oily substance found on the skin—that are more active, per a statement.
    Margaret Osborne, Smithsonian Magazine, 12 Sep. 2022
  • Hydrolyzed soy protein is made of low molecular weight peptides, which are highly digestible.
    Amber Smith, Discover Magazine, 23 Oct. 2022
  • It's got hydrolyzed proteins, which are made up of low molecular weight peptides that can be absorbed in the stomach with less risk of producing an immune response.
    Amber Smith, Discover Magazine, 23 Oct. 2022
  • The Flush Balms leave behind a hydrated, dewy-yet-natural finish thanks to microfine pigments and a low molecular weight emollient that doesn't clog pores or feel heavy.
    Kayla Blanton, Peoplemag, 23 Jan. 2023
  • In practice, though, Dr. Newsom says that molecular weight isn’t really something to spend your time worrying about.
    Sarah Jacoby, SELF, 3 Oct. 2019
  • That’s because glycerin’s low molecular weight (92 daltons, to be exact) can penetrate deeper into the skin.
    Elise Tabin, Harper's BAZAAR, 14 Mar. 2023
  • Cat dander has a very light molecular weight -- think invisible, microscopic dust blowing through the house.
    Annie Lane, cleveland, 30 Nov. 2022
  • In addition to the molecular shrinkage that happens during the freeze-drying process, each tablet is formulated with hyaluronic acid of the lowest molecular weight to begin with.
    Rebecca Dancer, Allure, 18 Apr. 2019
  • But Fuster said low molecular weight heparin and apixaban both showed positive effects.
    Maggie Fox, CNN, 26 Aug. 2020
  • The Hyaluronic Acid Serum is $90, and a multi-molecular weight hyaluronic acid serum that provides 72-hours of moisturizer, reducing dehydration and fine lines.
    Allyson Portee, Forbes, 1 July 2022
  • Once the pulmonary embolism is diagnosed, treatment with intravenous heparin, or injections of low-molecular weight heparin, both blood thinners, is started to treat the clot.
    Sandy Bauers, Philly.com, 6 Apr. 2018
  • Aside from being highly durable thanks to a polyethylene with ultra high molecular weight, the fabric is DWR-treated and completely waterproof.
    Outside Online, 23 June 2022
  • Genome editing agents are unable to easily enter cells because of their large size, unlike small-molecule drugs like ibuprofen and aspirin which can easily enter cells due to their low molecular weight.
    David Liu, The Conversation, 19 Apr. 2023
  • While low- and medium-molecular-weight HAs do the classic hyaluronic acid job of attracting and binding water, higher molecular weight HA tends to have a more occlusive effect, sealing in that hydration.
    Sarah Jacoby, SELF, 3 Oct. 2019
  • It’s formulated with hydrolyzed proteins, which are composed of low molecular weight peptides that can be absorbed in the digestive tract to reduce risk of triggering an immune reaction.
    Amber Smith, Discover Magazine, 17 Oct. 2022
  • From there, the researchers took tiny quantities of each beer and used two mass spectrometers (a tool that helps scientists measure a sample's exact molecular weight) to perform a chemical analysis in two different ways.
    Caroline Delbert, Popular Mechanics, 27 Aug. 2021
  • With that in mind, a formula with two different molecular weights of hyaluronic acid can penetrate more optimally and promote longer-lasting hydration.
    Jessie Quinn, Peoplemag, 4 Aug. 2023
  • This ultra hydrating serum is formulated with mixed molecular weight hyaluronic acid and niacinamide to plump and rejuvenate the skin, reduce fine lines, increase skin firmness, and improve elastin production.
    Cécilia Pelloux, Forbes, 2 June 2022
  • This firming serum also contains a peptide complex to help support the skin’s natural collagen and low and high molecular weight hyaluronic acid, which sounds really fancy, but just provides the skin with both immediate and long-term hydration.
    Olivia Hanson, Peoplemag, 10 Feb. 2023

Some of 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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