blood sugar

noun

: the glucose in the blood
also : its concentration (as in milligrams per 100 milliliters)

Examples of blood sugar in a Sentence

As a diabetic, he needs his blood sugar to stay at the right levels.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sugar alcohols, such as xylitol and erythritol, also have the potential to raise blood sugar, which can be an issue for those with diabetes. Hannah Yasharoff, USA Today, 18 Apr. 2026 GLP-1s are a class of medications that help manage blood sugar levels and promote weight loss. Christopher Edwards, PEOPLE, 16 Apr. 2026 Spaghetti squash contains polysaccharides, a type of indigestible fiber that may help prevent blood sugar from rising after eating. Heather Jones, Verywell Health, 16 Apr. 2026 Some research has shown that taking omega-3 fatty acids and vitamin D together can help lower blood sugar levels. Emmanuella Ogbonna, Health, 16 Apr. 2026 See All Example Sentences for blood sugar

Word History

First Known Use

1881, in the meaning defined above

Time Traveler
The first known use of blood sugar was in 1881

Browse Nearby Words

Cite this Entry

“Blood sugar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blood%20sugar. Accessed 24 Apr. 2026.

Kids Definition

blood sugar

noun
: the glucose in the blood
especially : the amount or percentage of such sugar

Medical Definition

blood sugar

noun
: the glucose in the blood
also : its concentration (as in milligrams per 100 milliliters)
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster