insulin
noun
in·su·lin
ˈin(t)-s(ə-)lən 
: a protein pancreatic hormone secreted by the beta cells of the islets of Langerhans that is essential especially for the metabolism of carbohydrates and the regulation of glucose levels in the blood and that when insufficiently produced results in diabetes mellitus
Examples of insulin in a Sentence
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Though more research is needed, inositol’s ability to control insulin sensitivity may help manage conditions related to metabolic syndrome.
—
Mark Gurarie, Verywell Health, 18 Apr. 2025
Apples Apples are an excellent choice of nutritious evening snack, as the fiber helps to keep blood sugar stable, preventing insulin spikes.
—Veronica Cristino, Vogue, 9 Apr. 2025
An artificial pancreas is a system that uses a computer to deliver insulin based on real-time blood sugar readings.
—Brenda Goodman, CNN Money, 9 Apr. 2025
After 20 years, the Inflation Reduction Act ended Medicare's most egregious overpayments and brought down the cost of insulin.
—Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025
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Mark Gurarie, Verywell Health, 18 Apr. 2025
Apples Apples are an excellent choice of nutritious evening snack, as the fiber helps to keep blood sugar stable, preventing insulin spikes.
—Veronica Cristino, Vogue, 9 Apr. 2025
An artificial pancreas is a system that uses a computer to deliver insulin based on real-time blood sugar readings.
—Brenda Goodman, CNN Money, 9 Apr. 2025
After 20 years, the Inflation Reduction Act ended Medicare's most egregious overpayments and brought down the cost of insulin.
—Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025
See All Example Sentences for insulin
Cite this Entry
“Insulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulin. Accessed 23 Apr. 2025.
Copy CitationKids Definition
insulin
noun
in·su·lin
ˈin(t)-s(ə-)lən
: a hormone that is produced by the pancreas and is necessary for the normal use of glucose by the body
Medical Definition
insulin
noun
in·su·lin
ˈin(t)-s(ə-)lən
: a protein hormone that is synthesized in the pancreas from proinsulin and secreted by the beta cells of the islets of Langerhans, that is essential for the metabolism of carbohydrates, lipids, and proteins, that regulates blood sugar levels by facilitating the uptake of glucose into tissues, by promoting its conversion into glycogen, fatty acids, and triglycerides, and by reducing the release of glucose from the liver, and that when produced in insufficient quantities results in diabetes mellitus see iletin
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