glycemic index

noun

: a measure of the rate at which ingested food causes the level of glucose in the blood to rise

also : a ranking of foods according to the glycemic index

—abbreviation GI

Examples of glycemic index in a Sentence

Recent Examples on the Web

Blueberries tend to be a better option for blood sugar management, both right after eating and over time, because of their lower glycemic index and plant compounds that slow the release of glucose and improve insulin sensitivity. —Angelica Bottaro, Verywell Health, 17 June 2026

Sourdough has a lower glycemic index than white or wheat bread, causing a slower, more gradual rise in blood sugar. —Kirsten Nunez, Martha Stewart, 14 June 2026

Sourdough bread is better for blood sugar because fermentation slows carbohydrate digestion and lowers its glycemic index. —Jillian Kubala, Health, 11 June 2026

Hassick noted that pasta tends to raise blood sugar more gradually than foods like white bread or sweets, thanks to its naturally lower glycemic index. —Samantha Agate, Fort Worth Star-Telegram, 22 May 2026

Word History

First Known Use

1981, in the meaning defined above

Medical Definition

glycemic index

noun

: a measure of the rate at which an ingested food causes the level of glucose in the blood to rise

the insulin response caused by carbohydrate depends on the glycemic index … of the food

—Trevor Smith

also : a ranking of foods according to their glycemic index

—abbreviation GI