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

This effect contributes to both blood sugar regulation and weight loss.

From Science Daily • Jun. 5, 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

Type 2 diabetes is marked by high blood sugar that occurs when insulin, the hormone that helps move glucose from the blood into cells, does not work effectively.

From Science Daily • May 31, 2026

“People get dizzy for so many reasons. He could have gotten up too quickly. Or maybe his blood sugar dropped.”

From "Amina's Song" by Hena Khan

Related Words

• glucose