What does Of stand for?

Official (DAVI)

Offizier (SAUS)

Osmond Tape Exchange - An association (EA)

Ovenstone Factor (AD)

Degrees Fahrenheit

Fast Airways BV - Netherlands - ICAO designator (ICDA)

Fitted for Oil Fuel - Ships

Frankford Public Library, Ontario - Library symbol - National Library of Canada (BIB)

Noosa Air - ICAO designator (AD)

Norfolk Island - NCIC country-territory code (NCIC)

Objective Force

Occipitalfrontal - Diameter of skull

Occupations Finder - A publication (DHP)

Oceanographic Facility

Odd Fellows - An association

Off Course (SAUS)

Offenbach - Main - German license plate city code

Official Files

Offset Printing Program - Association of Independent Colleges and Schools specialization code

Offshore Funds - Investment term

Offshore Oil International (SAUS)

Oil Facility - International Monetary Fund

Oil-Filled (IAA)

Oil Fired (ADA)

Oil Fuel - British military (DMA)

Old Face - Typography

Old Field - Botany

Old French - Language, etc.

One of the Finn (SAUS)

One of the Firm - Telecommunications (TEL)

Open Forum - An association (EA)

Open Fracture - Medicine (MELL)

Open Full - Container (DCTA)

Operand Field (SAUS)

Operating Forces - Navy

Operational Fixed

Operational Functionality (SAUS)

Operation Friendship (BUAC)

Operations and Food Analysis

Operations Following (MCD)

Ophthalmological Foundation - Later, NSPB

Optical Fibre (EECA)

Optical Flat (SAUS)

Optical Fluorescence (SAUS)

Optical Frequency

Optic Fundi (STED)

Optimal Feedback (SAUS)

Optimal Filtering (SAUS)

Optional Feature (IAA)

Optional File (SAUS)

Optional Form

Orbital Facilities (SAUS)

Orbital Facility (IAA)

Orbitofrontal

Order of the Founder - Salvation Army

Ordnance Factory (SAUS)

Oriented Film (SAUS)

Orphan Foundation - Later, OFA (EA)

Orthochromatic Film - Photography (DGA)

Oscillator Frequency - Telecommunications (IAA)

Osfriends (EA)

Osmotic Fragility Test

Osseointegration Foundation (SAUS)

Osteitis Fibrosa - Medicine (MAE)

Osteopathic Foundation - Later, NOF

Ostrum-Furst - Syndrome - Medicine (STED)

Other Medical/Surgical Facility (MEDA)

Outer Flame (SAUS)

Outfield - Baseball

Outfielder - Baseball term (NDBD)

Output Factor - Computer science (IEEE)

Output File (SAUS)

Outside Face - Technical drawings

Ovenstone Factor - Medicine (MAE)

Overflow

Overflow Flag (SAUS)

Overfrequency (MSA)

Oxbow Falls (AD)

Oxenstierna Foundation (AD)

Oxford Foundation (AD)

Oxide Film (SAUS)

Oxidizing Flame

Oxydizer-to-Fuel - Ratio

Oxygen Fill (NASA)

Oxygen-Free (ACAE)

Official (ELAL)

Old Face (AD)

Optional Form (AD)

Outside Face (AD)

Overflow (ELAL)

Oxidizing Flame (AD)