Definition of islets of Langerhans in English:

islets of Langerhans

Syllabification: is·lets of Lang·er·hans
Pronunciation: /ˈlaNGərˌhanz, ˈläNGərˌhäns
(also islands of Langerhans)


  • Groups of pancreatic cells secreting insulin and glucagon.
    More example sentences
    • Neuroglobin mRNA was also present in adrenal cells and the cells of the pancreatic islets of Langerhans.
    • One of the actions of insulin, which is also secreted by the islets of Langerhans, is to activate a specific enzyme in the liver.
    • The pancreas is dotted with hormone-producing tissue called the islets of Langerhans, which contain alpha and beta cells.


late 19th century: named after Paul Langerhans (1847–88), the German anatomist who first described them.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody