1. (

• californium ,
• Cf ,
• atomic_number_ ,

) a radioactive transuranic element; discovered by bombarding curium with alpha particles ;

2. (

• cystic_fibrosis ,
• CF ,
• fibrocystic_disease_of_the_pancreas ,
• pancreatic_fibrosis ,
• mucoviscidosis

) the most common hereditary disease; the child's lungs and intestines and pancreas become clogged with thick mucus; caused by defect in a single gene; no cure is known ;