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type 1 diabetes or type 1 diabetes mellitus

A chronic autoimmune disease in which the insulin-producing beta cells of the pancreas are destroyed, leading to high glucose levels in the blood and resulting in impaired metabolism of carbohydrates, fats, and proteins. The disease, which is characterized by excessive thirst, frequent urination, metabolic acidosis, and wasting, typically appears in childhood or adolescence and requires lifelong administration of insulin. Also called insulin-dependent diabetes, insulin-dependent diabetes mellitus.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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