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

For type 2 diabetes, regular blood sugar checks, including an A1C test, can help catch high blood sugar early on. — Nick Jonas, Time, 5 Nov. 2026

Drugs such as Ozempic and Zepbound have been shown to improve blood sugar, blood pressure and cardiovascular risk, but they’re also linked to loss of both fat and lean mass, including skeletal muscles. — NBC news, 4 Nov. 2026

Cow’s milk has saturated fat, and the high amount in 2% and whole milk can increase heart disease risk, which is already elevated in people with high blood sugar or diabetes. — Stephanie Brown, Verywell Health, 4 Nov. 2026

That research has sparked interest in whether black garlic might help with heart health, cholesterol and blood sugar. — Ryan Brennan, Kansas City Star, 3 Nov. 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)