There are multiple definitions:

1. Federal Communications Commission(English)

   • FM, PCM, RAN
   • Organizations (documentation), Communication
   • https://doi.org…OC.2014.2298437

2. fluid catalytic cracking(English)

   • EPA
   • Environment

3. familial colorectal cancer(English)

   • a pattern of colon and rectal cancer running in families where tests do not find a major single-gene mutation like Lynch syndrome
   • FCC-X, CRC
   • Gastroenterology, Oncology
   • https://doi.org…oncog.v14.i1.10