1. Causing a reduction in caliber of a bronchus or bronchial tube. ... 2. An agent that possesses this action (e.g., histamine). ... (05 Mar 2000) ... 
(brong″ko-kәn-strik´tәr) narrowing the lumina of the bronchi. an agent that causes such constriction.
Type: Term Pronunciation: brong′kō-kon-strik′ter, -tōr Definitions: 1. Causing a reduction in caliber of a bronchus or bronchial tube. 2. An agent that possesses this action (histamine, acetylcholine).
a substance that causes the lung airways to tighten up and become more narrow