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.
While the normal range for blood sugar is 80-100, Roose’s was 519. Molly Keshin, New York Times, 31 May 2026 Eating too many high-sugar foods every day can affect more than your blood sugar. Lindsey Desoto, Health, 30 May 2026 Cording reinforces this point, noting that fiber supports satiety, blood sugar regulation, and digestive health, with experts recommending fiber intake ranging from 25–38 grams per day. Lynn Andriani, Martha Stewart, 30 May 2026 Potential side effects of GLP-1s include nausea, vomiting, changes in vision, low blood sugar, and, in rare cases, thyroid cancer. Maia Rosenfeld, NBC news, 29 May 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 5 Jun. 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)
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