tuberculosis

/tʊˌbɜːr.kjəˈloʊ.sɪs/

noun CEFR B1

Definition

A serious infectious disease that mainly affects the lungs, caused by a bacterium.

Often abbreviated “TB” — still one of the leading infectious-disease killers worldwide.

Etymology From Latin tuberculum, 'small swelling,' since the disease produces nodules in the lungs.