type 1 diabetes

noun

: a form of diabetes mellitus that usually develops during childhood or adolescence and is characterized by a severe deficiency in insulin secretion resulting from atrophy of the islets of Langerhans and causing hyperglycemia and a marked tendency toward ketoacidosis

called also insulin-dependent diabetes, insulin-dependent diabetes mellitus, type 1 diabetes mellitus

Examples of type 1 diabetes in a Sentence

Recent Examples on the Web
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.
Scientists are now trying to tap these cells for new ways to treat cancer, type 1 diabetes, rheumatoid arthritis and organ or tissue transplant complications. Lauren J. Young, Scientific American, 23 Dec. 2025 Two of the couple's children — son Noble, 15 months, and daughter Goldie, 6 — were diagnosed with type 1 diabetes within months of each other, even though there's no history of the condition in their family, the couple tells PEOPLE. David Chiu, PEOPLE, 21 Dec. 2025 The researchers also studied nine mice that had long-standing type 1 diabetes. Angelica Stabile, FOXNews.com, 28 Nov. 2025 Nick Jonas, a singer, actor, and member of the Jonas Brothers, also has type 1 diabetes. Jenna Anderson, Health, 24 Nov. 2025 See All Example Sentences for type 1 diabetes

Word History

First Known Use

1982, in the meaning defined above

Time Traveler
The first known use of type 1 diabetes was in 1982

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Cite this Entry

“Type 1 diabetes.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/type%201%20diabetes. Accessed 7 Jan. 2026.

Medical Definition

type 1 diabetes

noun
: diabetes of a form that usually develops during childhood or adolescence and is characterized by a severe deficiency of insulin secretion resulting from atrophy of the islets of Langerhans and causing hyperglycemia and a marked tendency toward ketoacidosis

called also insulin-dependent diabetes, insulin-dependent diabetes mellitus, juvenile diabetes, juvenile-onset diabetes, type 1 diabetes mellitus

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