Definition of "insulin"

insulin

/ˈɪnsjʊlin/

noun
countable and uncountable, plural insulins
1. A polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).
  Quotations
  Ask a dozen persons to tell you what they know about insulin and you will get some surprising and contradictory an- swers. The truth is this: Insulin is not a cure for diabetes, but it is helping to prolong and gladden lives.
  1926, The Survey Volume 56, 65
  Nationally the average insulin price nearly tripled from 2002 through 2013, and prices have risen 10% or more a year since then, forcing many diabetics to ration their insulin.
  2019, Associated Press, “Colorado law caps cost of insulin at $100 a month,” The Washington Times
2. Any exogenous preparation of this hormone for use as a medication.
3. (broadly) Any exogenous preparation of this hormone or its analogues for use as a medication.