Definition of insulin
: 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
Recent Examples of insulin from the Web
In turn, there is an exaggerated insulin response which causes all sorts of problems, including adding body fat.
The world's most common form of diabetes, Type II arises when the body can no longer properly use insulin, a hormone that regulates blood sugar.
Several guests were transported by EMS to hospitals for treatment of potentially life-threatening situations, such as pneumonia and insulin shock.
Some islet-transplant recipients can forgo insulin therapy for several years.
Nevada’s focus on insulin struck a chord nationally.
Success on a weight-loss diet can be predicted by measuring a person’s blood sugar and fasting insulin levels, according to a study presented at the American Diabetes Association meeting in San Diego.
One woman injected her insulin improperly, causing a large portion of each dose to leak out of her body.
Most of India’s diabetes cases are Type 2, often occurring when extra weight limits the body’s ability to produce or use insulin to turn food into energy.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'insulin'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of insulin
New Latin insula islet (of Langerhans), from Latin, island
First Known Use: 1914See Words from the same year
INSULIN Defined for English Language Learners
Definition of insulin for English Language Learners
medical : a substance that your body makes and uses to turn sugar into energy
INSULIN Defined for Kids
Definition of insulin for Students
: a hormone made by the pancreas that helps the cells in the body take up glucose from the blood and that is used to treat diabetes
Medical Definition of insulin
: 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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