thorac/o, pleur/o
thorac/o means chest and pleur/o means the lining around the lungs (Greek).
"thor-ACK-oh / PLOOR-oh." Coach: "Thorac is the chest; pleur is the slippery lining around the lungs."
Examples: thoracic, thoracotomy, thoracostomy, thoracentesis, hemothorax.
Also: pneumothorax, pleural, pleuritis, pleurodesis, pleural effusion.