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insulin.

A polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).

7 characters3 syllables approx.English language

Meaning & usage

noun/ˈɪnsjʊlin/UK/ˈɪnʃʊlɪn/UK/ˈɪnsəlɪn/US/ˈɪnsəlɪn/General-South-African
  1. A polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).

    countable · uncountable
    Mommy said that Grandma's diabetes happened because her body stopped making its own insulin.
  2. Any exogenous preparation of this hormone for use as a medication.

    countable · uncountable
    The advent of insulin in the mid-20th century changed the lives of millions of people with diabetes.
  3. Any exogenous preparation of this hormone or its analogues for use as a medication.

    broadly · countable · uncountable
    A: What kind of insulin do you take? B: I use basal-bolus therapy, which in my case involves glargine and lispro.
Where this word comes from

From Latin īnsula (“island”) (named for the islets of Langerhans, where insulin is produced) + -in.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.