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

She also checks her blood sugar, for her diabetes, and to see how much water she is drinking, for her kidneys.

From The Wall Street Journal • Jun. 9, 2026

Early research suggests it may help lower blood sugar and increase fat burning without reducing appetite or causing muscle loss, two common concerns associated with some current weight loss medications.

From Science Daily • Jun. 3, 2026

Researchers say this approach improved blood sugar regulation and body composition in animal studies while avoiding several side effects often linked to GLP-1 therapies, including appetite suppression, muscle loss, and digestive issues.

From Science Daily • Jun. 3, 2026

And I find strength training really helps improve, manage their blood sugar levels, and it helps the joint pain, helps strengthen their bones.

From BBC • Jun. 2, 2026

Maybe because my blood sugar was low and it was The Week From Hell, I wanted a shout, a sound—any sound.

From "Silent To The Bone" by E.L. Konigsburg

Related Words

• glucose