blood sugar

American  

noun

1. glucose in the blood.

2. the quantity or percentage of glucose in the blood.

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blood sugar British  

noun

1. med the glucose concentration in the blood: the normal fasting value is between 3.9 and 5.6 mmol/l

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blood sugar Scientific  

1. Sugar in the form of glucose in the blood. The concentration of blood sugar is measured in milligrams of glucose per 100 milliliters of blood.

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Etymology

Origin of blood sugar

First recorded in 1925–30

Example Sentences

See Examples For:

blood sugar

I was also told to avoid white bread, crackers, pasta and rice—what the dietitian called “fiber-stripped carbs”—because they could send my blood sugar soaring and then crashing.

From The Wall Street Journal ● Oct. 2, 2026

The first case he saw was a teenage girl with several days of fever and rash, whose blood sugar appeared dangerously low.

From BBC ● Sep. 30, 2026

Clinicians therefore tend to focus on treating underlying conditions and recommending lifestyle changes, including weight loss and better blood sugar control.

From Science Daily ● Sep. 28, 2026

So is Ozempic’s active ingredient, which mimics the gut hormone GLP-1 to control blood sugar and curb appetite.

From The Wall Street Journal ● Sep. 25, 2026

He told her she needed to educate herself, learn the warning signs, know how to bring down her blood pressure and control her blood sugar.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot

Related Words

• glucose