glu·​cose | \ˈglü-ˌkōs, -ˌkōz\

Definition of glucose 

1 : a crystalline sugar C6H12O6 specifically : the sweet colorless soluble dextrorotatory form that occurs widely in nature and is the usual form in which carbohydrate is assimilated by animals

2 : a light-colored syrup made from cornstarch

Examples of glucose in a Sentence

Recent Examples on the Web

First, their weight, blood pressure, abdominal fat, blood insulin and glucose levels were measured—all of which can be signs of cardiovascular risk. Susan Pinker, WSJ, "Resilient Teens in a Dangerous World," 12 Dec. 2018 There is also glycolysis, in which glucose is broken down to produce energy. Diana Gitig, Ars Technica, "Sugar cures cancer! (Not really, but one sugar may help chemo)," 21 Nov. 2018 Forest Service health experts have even followed firefighting crews to take blood samples to check glucose levels, which can indicate alertness. Keith Ridler, The Seattle Times, "Study shows wild-land firefighters suffer health, reaction-time declines," 2 Sep. 2018 The watch measures calorie intake, calories burned, heart rate, stress level, hydration level and sleep status all through FLOW technology, which measures the glucose in your cells through your skin. Lauren Alexis Fisher, Harper's BAZAAR, "The Newest Fashion Tech for 2015," 7 Jan. 2015 The diet spurs the body to produce compounds called ketones from stored fat, using them as a fuel source instead of glucose. Anne Marie Chaker, WSJ, "This Coffee Is Nice But It Needs More Butter," 26 Nov. 2018 In humans, fasting for 12 hours or more drops the levels of glycogen, a form of cellular glucose. Mark Barna, Discover Magazine, "Not So Fast," 24 Sep. 2018 Diabetes is a condition in which the pancreas cannot properly produce insulin to regulate levels of glucose in your body. Ilene Raymond Rush,, "She lost 100 pounds and reversed her type 2 diabetes. It's difficult, but possible," 14 June 2018 About 30 million Americans have diabetes, which causes excessively high levels of blood glucose. Bradley J. Fikes,, "New insulin-making cells can be made in the body, study suggests," 14 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'glucose.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of glucose

1840, in the meaning defined at sense 1

History and Etymology for glucose

French, modification of Greek gleukos must, sweet wine; akin to Greek glykys sweet — more at dulcet

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Last Updated

18 Dec 2018

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Time Traveler for glucose

The first known use of glucose was in 1840

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English Language Learners Definition of glucose

: a type of sugar that is found in plants and fruits


glu·​cose | \ˈglü-ˌkōs \

Kids Definition of glucose

: a sugar in plant saps and fruits that is the usual form in which carbohydrate is taken in by the animal body and used as a source of energy


glu·​cose | \ˈglü-ˌkōs, -ˌkōz \

Medical Definition of glucose 

: an optically active sugar C6H12O6 that has an aldehydic carbonyl group especially : the sweet colorless soluble dextrorotatory form that occurs widely in nature and is the usual form in which carbohydrate is assimilated by animals

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More from Merriam-Webster on glucose

Rhyming Dictionary: Words that rhyme with glucose

Spanish Central: Translation of glucose

Nglish: Translation of glucose for Spanish Speakers

Britannica English: Translation of glucose for Arabic Speakers Encyclopedia article about glucose

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a knickknack or trinket

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