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

Excess energy caused by obesity, high blood sugar and metabolic disease can lower the brain's resilience by damaging blood vessels and contributing to insulin resistance. — Khloe Quill, FOXNews.com, 30 Sep. 2026

Sarsour, who has Type 2 diabetes, lost more than 30 pounds while detained by ICE, and his blood sugar levels were checked only once a month, putting him at risk of organ failure or death, his attorneys said. — Cybele Mayes-Osterman, Los Angeles Times, 30 Sep. 2026

The drugmaker said the findings suggest CagriSema may address underlying factors of obesity and diabetes in the brain and multiple organs and tissues, rather than only impacting weight and blood sugar levels. — Annika Kim Constantino, CNBC, 30 Sep. 2026

Or that antipsychotic medications used to treat behavioral health issues, like the Thorazine prescribed to Christian, can also raise blood sugar levels. — Joseph Shapiro, NPR, 30 Sep. 2026

Word History

First Known Use

1881, in the meaning defined above

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)