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
Mozaffarian said seed oils can help lower glucose levels, improve insulin sensitivity, reduce bad (LDL) cholesterol, reduce triglycerides and increase levels of positive (HDL) cholesterol.
—
Mary Kekatos,
ABC News,
3 July 2026
Mounjaro mimics two hormones that occur naturally in the body, which regulate blood sugar and appetite; the medication slows down gastric emptying and helps the pancreas release insulin as blood sugar rises.
—
Clare Coulson,
Condé Nast Traveler,
2 July 2026
It’s regulated in the same product category with drug dose calculators that take inputs like blood glucose levels and return insulin dosing recommendations.
—
Mario Aguilar,
STAT,
2 July 2026
This can damage insulin receptors and lead to insulin resistance.
—
Md Published,
Verywell Health,
2 July 2026
See All Example Sentences for insulin
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Mary Kekatos,
ABC News,
3 July 2026
Mounjaro mimics two hormones that occur naturally in the body, which regulate blood sugar and appetite; the medication slows down gastric emptying and helps the pancreas release insulin as blood sugar rises.
—
Clare Coulson,
Condé Nast Traveler,
2 July 2026
It’s regulated in the same product category with drug dose calculators that take inputs like blood glucose levels and return insulin dosing recommendations.
—
Mario Aguilar,
STAT,
2 July 2026
This can damage insulin receptors and lead to insulin resistance.
—
Md Published,
Verywell Health,
2 July 2026
See All Example Sentences for insulin
Cite this Entry
“Insulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulin. Accessed 5 Jul. 2026.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
