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

Continuous Glucose Monitoring Continuous glucose monitors (CGMs) — small sensors worn on the arm that measure blood sugar every few minutes — were designed for diabetes. — Jesse Pines, Forbes.com, 20 July 2026

Overall, CoQ10 isn’t something clinicians routinely suggest for blood sugar management. — Sarah Garone, Health, 20 July 2026

There is evidence that shows standing at your desk after lunch can help reduce blood sugar spikes that occur after eating. — Bestreviews, Mercury News, 20 July 2026

Research does not show that fruit juice consistently spikes blood sugar more than soda when carbohydrate amounts are similar. — Verywell Health, 20 July 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)