- a substance that acts to dilate constricted bronchial tubes to aid breathing, used especially for relief of asthma.
Origin of bronchodilator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any drug or other agent that causes dilation of the bronchial tubes by relaxing bronchial muscle: used, esp in the form of aerosol sprays, for the relief of asthma
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
bronchodilator(brŏng′kō-dī-lā′tər, -dī′lā′-, -dĭ-lā′-)
- An agent that causes an increase in the caliber of a bronchus or bronchial tube and eases breathing by relaxing bronchial smooth muscle.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A drug that widens the air passages of the lungs and eases breathing by relaxing bronchial smooth muscle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.