OD

OD is a two-letter abbreviation and can mean any of the following:

• Order of Distinction, a civil honour of Jamaica
• Object Desktop, a suite of skinning and customization programs by Stardock, or ObjectDock, another program by the same company
• Oblivion Dust, a Japanese rock band
• On Demand, when it is available on demand
• Officer of the day
• Old Dragon, former pupil of the Dragon School
• Old Derbeian, a former pupil of Derby School
• Olive Drab, as in OD Green
• Oneness Darkness, a Texas rock band
• OpenDocument, the only ISO acknowledged standard document file format
• One Day Match, a type of shorter match in cricket
• Optical density
• Ordnance Datum, a vertical datum used in Great Britain as the basis for deriving altitudes on maps.
• Doctor of Optometry (O.D.)
• Organization development
• Orphei Drängar, a Swedish male choir
• "Ocular dextra," medical terminology meaning "right eye" ("ocular sinistra" is the term for the left eye). Abbreviated O.D. and O.S. and commonly used in ophthalmology and optometry.
• Outside diameter, a dimension commonly used to specify the size of tubing or pipe
• Od language, a language based in Pakistan.
• Overdose, related to Drugs
• OverDrive CPUs
• Odessa, TX, a small city in West Texas
• On Duty, mostly used in colleges and schools in the attendance sheets to indicate the time the student spent on other extracurricular activities (Cultural Programs etc.)
• Original dance, the second part of an ice dancing competition
• Octavian Droobers, an orienteering club.
• Oringin Destination fare, used for calculating airfares
• O.D. (musician) a founding member of the Finnish industrial band Velcra
• Official Dress in the popular agriculture club: National FFA Organization

Non abbreviated meanings of OD are as follows:

• For the Norse god Od, see Óðr
• For the life force Od, see Odic force
• For the Unix program od, see od (Unix)
• Od, a replacement for "God" in some minced oaths