Meaning of bronchodilator

bron•cho•di•la•tor

Pronunciation: (brong"kō-dī-lā'tur, -di-), [key]
— n.
  1. a substance that acts to dilate constricted bronchial tubes to aid breathing, used esp. for relief of asthma.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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