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bronchodilator

(bräŋ′kō dī′lāt′ər)

noun

any of various drugs, as epinephrine or theophylline, that open bronchial air passages by relaxing the tightened muscles that surround the bronchial tubes, used to treat asthma, bronchitis, emphysema, etc.

Related Forms:

bronchodilation noun

See bronchodilator in American Heritage Dictionary 4

noun

A drug that widens the air passages of the lungs and eases breathing by relaxing bronchial smooth muscle.

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