noun Anatomy.
a small branch of a bronchus.

1865–70; < Neo-Latin bronchiolum, equivalent to bronchi(a) bronchia + -olum -ole1

bronchiolar [brong-kee-oh-ler, brong-kahy-uh-] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To bronchiole
World English Dictionary
bronchiole (ˈbrɒŋkɪˌəʊl)
any of the smallest bronchial tubes, usually ending in alveoli
[C19: from New Latin bronchiolum, diminutive of Late Latin bronchium, singular of bronchia]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

Mod.L., from dim. of bronchia (see bronchial).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

bronchiole bron·chi·ole (brŏng'kē-ōl')
Any of the fine, thin-walled, tubular extensions of a bronchus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
bronchiole   (brŏng'kē-ōl')  Pronunciation Key 
Any of the small, thin-walled tubes that branch from a bronchus and end in the alveolar sacs of the lung.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Click the icon to see an image of a normal versus asthmatic bronchiole.
Particles not trapped by bronchiole mucus enter the alveoli.
Fibrous or irregularly shaped particles tend to become caught at bronchiole branching points.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature