- Anatomy. any of the smallest branches of an artery, terminating in capillaries.
Origin of arteriole
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- anatomy any of the small subdivisions of an artery that form thin-walled vessels ending in capillaries
Word Origin for arteriole
C19: from New Latin arteriola, from Latin artēria artery
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
"small artery," by 1808, from Modern Latin arteriola, diminutive of arteria (see artery).
Online Etymology Dictionary, © 2010 Douglas Harper
- A minute artery, especially a terminal artery continuous with the capillary network.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Any of the smaller branches of an artery, especially one that connects with a capillary.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.