cystic fibrosis
noun /ˌsɪstɪk faɪˈbrəʊsɪs/
/ˌsɪstɪk faɪˈbrəʊsɪs/
[uncountable]- a serious medical condition that some people are born with, in which glands in the lungs and other organs do not work correctly, causing the production of extra thick mucus. It often leads to infections and can result in early death.