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
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The glycemic index measures how quickly a carbohydrate-containing food raises blood sugar. Lindsay Curtis, Verywell Health, 23 June 2026 One way researchers estimate how foods affect blood sugar is by using the glycemic index (GI). Brianna Tobritzhofer, Health, 22 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 These include dietary factors like dairy or high–glycemic index foods, psychological stress and changes in the skin microbiome. Lauryn Higgins, Flow Space, 11 May 2026 See All Example Sentences for glycemic index

Word History

First Known Use

1981, in the meaning defined above

Time Traveler
The first known use of glycemic index was in 1981

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Cite this Entry

“Glycemic index.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glycemic%20index. Accessed 2 Jul. 2026.

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 foodTrevor Smith
also : a ranking of foods according to their glycemic index
abbreviation GI

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