名詞 c.f.:

1. a radioactive transuranic element; discovered by bombarding curium with alpha particles
   同義詞：californium, Cf, atomic number 98
2. the most common congenital disease; the child's lungs and intestines and pancreas become clogged with thick mucus; caused by defect in a single gene; there is no cure
   同義詞：cystic fibrosis, CF, fibrocystic disease of the pancreas, pancreatic fibrosis, mucoviscidosis

副詞 c.f.:

1. compare (used in texts to point the reader to another location in the text)
   同義詞：cf., cf