1. 
   PFCs
   acronym: perfluorocarbon compounds
   Found op http://cdiac.ornl.gov/pns/acronyms.html#P
   
   
2. 
   PFCS
   Primary Flying Control System
   Found op http://www.tornado-data.com/siteinfo/glossary.htm
   
   
3. 
   pfcs
   1) Certain soldiers briefly 2) Corp.'s underlings 3) Cpls. demoted one grade 4) Cpls., once 5) Cpls.' subordinates 6) Gomer pyle's peers 7) Nco's charges 8) Perfluorocarbon compounds 9) Px customers 10) Sgt.'s charges 11) S...
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/pfcs/1
   
   

Tip: double click on a word to show its meaning.