[ gloo-kuh-gon ]
/ ˈglu kəˌgɒn /

noun Biochemistry.

a hormone secreted by the pancreas that acts in opposition to insulin in the regulation of blood glucose levels.

Origin of glucagon

1923; probably gluc- + Greek ágōn present participle of ágein to lead, drive; see -agogue

Words nearby glucagon Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for glucagon

British Dictionary definitions for glucagon

/ (ˈɡluːkəˌɡɒn, -ɡən) /


a polypeptide hormone, produced in the pancreas by the islets of Langerhans, that stimulates the release of glucose into the bloodCompare insulin

Word Origin for glucagon

C20: from gluc (ose) + -agon, perhaps from Greek agein to lead
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for glucagon

[ glōōkə-gŏn′ ]


A polypeptide hormone secreted by alpha cells that initiates a rise in blood sugar levels by stimulating the breakdown of glycogen by the liver.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for glucagon

[ glōōkə-gŏn′ ]

A polypeptide hormone produced by the pancreas that stimulates an increase in blood glucose levels, thus opposing the action of insulin.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.