Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Language: Latin
Origin: insula ( INSULAR); because insulin is made by body organs called the "islets of Langerhans"

insulin

 noun
     
Related topics: Biology, Chemistry, Medicine
in‧su‧lin [uncountable]
HBM a substance produced naturally by your body which allows sugar to be used for energy:
diabetic patients requiring insulin
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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