Definition of "thoracentesis" [tho•ra•cen•te•sis]

• A medical procedure involving needle drainage of air or fluid from the pleural space. (noun)

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• "Fluid drainage (paracentesis/thoracentesis) with or without catheter placement"
• "What risks are associated with paracentesis or thoracentesis?"
• "The procedure for removing fluid from the chest is called thoracentesis."