0 used in writing when you want the reader to make a comparison between the subject being discussed and something else
1 abbreviation for cardiac failure: a situation in which the heart stops working correctly or stops completely
2 written abbreviation for cystic fibrosis
3 abbreviation for cerebrospinal fluid: the fluid that surrounds the brain and spinal cord
4 written abbreviation for compare: used for referring to another written statement, document, or book:
Further amendments have been incorporated into the proposal (cf. Bartt & Sons p17).
