[ proh-in-suh-lin, -ins-yuh- ]
/ proʊˈɪn sə lɪn, -ˈɪns yə- /

noun Biochemistry.

the prohormone of insulin, converted into insulin by enzymatic removal of part of the molecule.

Nearby words

  1. prohibition party,
  2. prohibitionist,
  3. prohibitive,
  4. prohibitory,
  5. prohormone,
  6. project,
  7. project note,
  8. projected,
  9. projected window,
  10. projectile

Origin of proinsulin

First recorded in 1915–20; pro-1 + insulin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for proinsulin


[ prō-ĭnsə-lĭn ]


A single-chain polypeptide that is the precursor of insulin, converted into insulin by enzymatic action.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.