Order (EBF)
Ordinary (EBF)
Ordinate (SAUS)
Orotidine - Also, O - A nucleoside
CAP PA Gutierrez - Hernando R. Ordonez - Mexico - ICAO designator (FAAC)
Chicago - Illinois O'Hare Airport - Derived from former name: Orchard Field - Airport symbol
Observed Range Deviation - Navigation systems
Octane Requirement Decrease - Fuels and lubricants
Office for Research and Development - American Library Association (AEBS)
Office of Rare Diseases - National Institutes of Health
Office of Rare Diseases, National Institutes of Health (SAUS)
Office of Regional Development - Organization of American States
Office of Research and Development - National Oceanic and Atmospheric Administration (GFGA)
Office of Research and Development - Washington, DC - Environmental Protection Agency (GRD)
Office of Research Development - Office of Policy, Evaluation, and Research - Department of Labor
Office of Rubber Director - WPB - World War II
Officers Replacement Depot (SAUS)
Off-Range Distance (MCD)
Ohio River Division - Army Corps of Engineers
Once-Run Distillate (PDAA)
Operational Readiness Date
Operational Readiness Demonstration - FAA (TAG)
Operational Ready - or Readiness Data - NASA (GFGA)
Operational Ready Data (or Date) (SAUS)
Operational Requirements Document (COE)
Operational Research Division - Department of National Defence - Canada
Operational Suitability (SAUS)
Operation Readiness Demonstration (SAUS)
Operations - or Operational Requirement Document
Optical Reference Device
Optical Rotary Dispersion
Optical Rotatory Dispersion
Oral Radiation Death (MELL)
Orbital Requirements Document
Ordained
Order - Lumber (WOHB)
Order
Orderly
Ordinal
Ordinance
Ordinanza - NCIC firearms make code (NCIC)
Ordinary (MSA)
Ordinary Seaman - British
Ordinary Share (SAUS)
Ordnance (AAG)
Ordovician - Period, era, or system - Geology
Organization - Military technology (DDF)
Overseas Replacement Depot - Military
Owner's Risk of Damage - Shipping
Oxidation-Reduced Diffusion (SAUS)
Ordained (GEAB)
Order (WDAA)
Ordinal (NTIO)
Ordinance (WDAA)
Ordinary (ELAL)
Learn more about Ord