molecular weight
nounDefinition of molecular weight
: 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
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Their results showed that the brown algae extract, which had the lowest molecular weight, did the best. — Sarah Jacoby, SELF, "Can Spirulina and Other Algae Skin-Care Products Live Up to the Hype?," 13 Aug. 2019 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, "When you see this number, it probably means storms are on the way," 3 Aug. 2019 This movement toward subtlety picked up steam in 2016 with the FDA approval of Juvéderm Volbella XC, which combines multiple molecular weights of hyaluronic acid for a softer fill. — Brennan Kilbane, Allure, "Dermatologists Are Now Using Fillers to Simulate Instagram Filters, So I Decided to Try It," 19 Apr. 2018 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, "5 Questions: Lessons from the early death of Maroon 5 manager Jordan Feldstein," 6 Apr. 2018 Dyneema, which is an ultra-high molecular weight polyethylene, is now used in Levi’s. — Steff Yotka, Vogue, "Intergalactic Fashion Is Trending on the Runways, But It Has Nothing on the Real Thing," 3 Apr. 2018 The story of the layers is told by the molecular weight of the elements contained in them. — Yereth Rosen, Alaska Dispatch News, "Teeth, underwater noise and photo collection examined for clues about Cook Inlet beluga woes," 24 Sep. 2017These example sentences are selected automatically from various online news sources to reflect current usage of the word 'molecular weight.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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