Pleural:Pertaining to thepleura, the thin covering that protects thelungs. The term "pleural" is pronounced like "plural" (but does not have plural meanings). From Healthy Resources 10 Rheumatoid Arthritis Symptoms What Is Exocrine Pancreatic Insufficiency? Understanding COVID-19 Testing and Treatment Featured Centers What Are the Best PsA Treatments for You? Understanding Biologics 10 Things People With Depression Wish You Knew Health SolutionsFrom Our Sponsors