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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
Recent Examples on the Web
Gray incorporated Tandem — a company that makes insulin pumps — at his recent football camp in his home state of Massachusetts.
—
Jesse Newell, Kansas City Star, 6 Feb. 2025
Reverse Biden’s order to lower the cost of prescription drugs and cap insulin prices.
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Dan Greene, The New Yorker, 6 Feb. 2025
Unlike glucose, fructose does not trigger a strong insulin response or promote satiety, which may lead to overeating.
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Stephanie Brown, Verywell Health, 5 Feb. 2025
For the True Choice Plus Medicare PPO plan, the deductible is now $500, excluding insulin furnished through an item of durable medical equipment.
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Anders Fogh Rasmussen, Newsweek, 4 Feb. 2025
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Word History
Etymology
New Latin insula islet (of Langerhans), from Latin, island
First Known Use
1914, in the meaning defined above
Phrases Containing insulin
Dictionary Entries Near insulin
Cite this Entry
“Insulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulin. Accessed 12 Feb. 2025.
Kids 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
More from Merriam-Webster on insulin
Nglish: Translation of insulin for Spanish Speakers
Britannica English: Translation of insulin for Arabic Speakers
Britannica.com: Encyclopedia article about insulin
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