34 OTF definitions

optical transfer function 
On The Fly 
Open Token Foundation 
on the phone 
Object Testing Framework 
Ocean Test Fixture 
Off The Floor 
On Top Fix 
Only the facts 
Ontario Teachers' Federation 
On-the-fly 
Optimum Traffic Frequency 
Optimum Transmission Frequency 
Orbital Test Flight 
Occupational Training for Families 
octamer transcription factor 
On The Floor 
On-line Tuning File 
Ontario Teachers Federation 
Ontario Teachers' Federation 
Ontario Technology Fund 
Open Telematics Framework 
Operational Task Force 
Operational Test Facility 
optimized Thomas-Fermi 
oral transfer factor 
Oral transmucosal fentanyl citrate 
Orders to Fire 
Orders To Fly 
Organ Transplant Fund