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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Key Takeaways Cinnamon may help lower blood sugar levels and improve insulin sensitivity, particularly in individuals with type 2 diabetes or polycystic ovary syndrome (PCOS).
—
Jamie Johnson, Verywell Health, 17 Oct. 2025
Police said Milne is insulin-dependent.
—Jenna Sundel, MSNBC Newsweek, 17 Oct. 2025
Being shorter may also mean a reduced risk of blood clots, cancer, and better insulin levels.
—Sherri Gordon, Health, 17 Oct. 2025
In 2023, Newsom announced the state had partnered with drug manufacturer Civica to produce its own insulin as the lifesaving drug had skyrocketed in price, leading some diabetics to ration or forgo their daily shots.
—Lia Russell, Sacbee.com, 16 Oct. 2025
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Jamie Johnson, Verywell Health, 17 Oct. 2025
Police said Milne is insulin-dependent.
—Jenna Sundel, MSNBC Newsweek, 17 Oct. 2025
Being shorter may also mean a reduced risk of blood clots, cancer, and better insulin levels.
—Sherri Gordon, Health, 17 Oct. 2025
In 2023, Newsom announced the state had partnered with drug manufacturer Civica to produce its own insulin as the lifesaving drug had skyrocketed in price, leading some diabetics to ration or forgo their daily shots.
—Lia Russell, Sacbee.com, 16 Oct. 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 18 Oct. 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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