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

The team also reviewed studies examining collagen's effects on oral health and cardiometabolic measures such as cholesterol, blood pressure, and blood sugar levels.

From Science Daily • Jun. 5, 2026

However, they are also rich in starch and have a relatively high glycemic index, meaning they can cause blood sugar levels to rise quickly.

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

“So”—his eyes grazed over the file in his hand—“today’s the big day! We’ll start Sir Fig Newton on insulin and get his blood sugar back in check.”

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas

Related Words

• glucose