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

Originally developed to treat type 2 diabetes by mimicking hormones that regulate blood sugar, the medication quickly became better known for its powerful impact on weight loss due to the way the same mimicking hormones affect appetite. —Daryl Austin, USA Today, 28 Mar. 2026

Insulin, which helps balance your blood sugar (or blood glucose), is another hormone affected by declining estrogen. —Caroline Tien, SELF, 27 Mar. 2026

The researchers found that people on Awiqli achieved the same blood sugar management as those on daily basal insulin. —Emily Kay Votruba, EverydayHealth.com, 27 Mar. 2026

Higher-dose patients with both obesity and type 2 diabetes saw similar lowering of blood sugar compared to the lower dose, the agency noted. —Angelica Stabile, FOXNews.com, 24 Mar. 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)