OD

OD or Od may refer to:

Non abbreviated meanings of OD

• The Odh or Od, a community in India and Pakistan and their language
• Od, a life force - see Odic force
• Od, a Nordic god - see Óðr
• Od, a replacement for "God" in some minced oaths

Health and medicine

• Doctor of Optometry (O.D.)
• Drug overdose, the use of a drug in quantities greater than recommended
• Occupational disease, the health effects from exposures associated with a particular occupation
• "OD", an abbreviation commonly used in medical prescriptions for the Latin phrases oculus dexter, ocular dexter, ocularis dexter, or omne in die; or the English phrase "once daily"
• Osteochondritis dissecans, a medical disease affecting the joints of both humans and animals

Science

• Optical Density (absorbance)
• Optical depth
• Optical depth (astrophysics)
• Oxygen Demand
  • Biochemical oxygen demand
  • Carbonaceous biochemical oxygen demand
  • Chemical oxygen demand
  • Theoretical oxygen demand

Technology

• od (Unix), a Unix program
• Object Desktop, a suite of skinning and customization programs by Stardock, or ObjectDock, another program by the same company
• OpenDocument, an international standard (ISO/IEC 26300) for saving and exchanging editable office documents
• Optical disc
• Ordnance Datum, a vertical datum used in Great Britain as the basis for deriving altitudes on maps
• Outside diameter, a dimension commonly used to specify the size of tubing or pipe

Other

• O.D, a song by the British industrial band Sunna
• O.D. (musician), a founding member of the Finnish industrial band Velcra
• Oblivion Dust, a Japanese rock band
• Occupation Double, a Quebec reality show that started in 2003.
• Official Dress in the popular agriculture club National FFA Organization
• Old Diocesan, a former pupil of Diocesan College
• Olive Drab, as in OD Green, this color is used in many firearms today
• On demand, associated with various products or services like video on demand
• One Direction, a British-Irish boy band
• Online dating
• Order of Distinction, a civil honour of Jamaica
• Organization development
• Original dance, the second part of an ice dancing competition
• Orphei Drängar, a Swedish male choir
• Overdrive
• Old Dunelmian, a former pupil of Durham School

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