单词	polysaccharide
释义	polysaccharide noun poly·​sac·​cha·​ride ˌpä-lē-ˈsa-kə-ˌrīd  : a carbohydrate that can be decomposed by hydrolysis into two or more molecules of monosaccharides especially : one (such as cellulose, starch, or glycogen) containing many monosaccharide units and marked by complexity Example Sentences Recent Examples on the Web In nature, scales of chitin (a polysaccharide common to insects) are arranged like roof tiles. Jennifer Ouellette, Ars Technica, 2 Aug. 2022 This serum from Allies of Skin utilizes multiple forms of hyaluronicacid (low molecular weight, high molecular weight, and botanical polysaccharide) to deliver concentrated moisture deep into fine lines wrinkles. Cristina Montemayor, Men's Health, 29 June 2022 The food science writer Harold McGee says that, like onions, shallots contain the fructose polymer inulin, a polysaccharide that breaks down into multiple simple sugars when heated, increasing the overall sweetness. New York Times, 23 May 2022 All crustaceans have chitosan, a polysaccharide that is the second most abundant organic compound in the world next to cellulose. Anchorage Daily News, 26 July 2021 Similarly, to trigger more robust protection in the elderly, a shot of a pneumococcal conjugate vaccine is boosted by one that contains a pneumococcal polysaccharide. Jon Cohen, Science | AAAS, 12 Feb. 2021 The scales of chitin (a polysaccharide common to insects) are arranged like roof tiles. Jennifer Ouellette, Ars Technica, 11 Sep. 2020 Risk for the coronavirus was reduced in those who had a pneumococcal polysaccharide or influenza vaccine, or were on melatonin, paroxetine, or carvedilol, according to Clinic research. Julie Washington, cleveland, 16 June 2020 The risk calculator study found that patients who received the pneumococcal polysaccharide vaccine (PPSV23) and flu vaccine were less likely to test positive for COVID-19 than those who didn’t receive the vaccinations. Julie Washington, cleveland, 16 June 2020 See More Word History Etymology International Scientific Vocabulary First Known Use 1892, in the meaning defined above Medical Definition polysaccharide noun poly·​sac·​cha·​ride -ˈsak-ə-ˌrīd  : a carbohydrate that can be decomposed by hydrolysis into two or more molecules of monosaccharides especially : one (as cellulose, starch, or glycogen) containing many monosaccharide units and marked by complexity called also glycan
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