OD or Od may refer to:

Education

* Old Diocesan, a former pupil of Diocesan College * Old Dunelmian, a former pupil of Durham School

Medicine

* OD or o.d., an abbreviation used in medical prescriptions for or "once daily" both meaning "take once every day" * Doctor of Optometry (O.D.) * , , or , meaning "right eye" in general ophthalmologic or optometric usage, particularly in eyeglass prescriptions * Osteochondritis dissecans, a medical disease affecting the joints of both humans and animals * Overdose, the use of a drug in quantities greater than recommended

Music

* Oblivion Dust, a Japanese rock band * One Direction, a British/Irish pop music band * Orphei Drängar, a Swedish male choir * O.D, a song by Sunna from the album ''

One Minute Science ''One Minute Science'' is the debut studio album from the British industrial rock band Sunna. The Album was released on 15 August 2000 in the United States on the Astralwerks label and on 6 November 2000 in the United Kingdom on the Melank ...

'' (2000) * ''

Overly Dedicated ''Overly Dedicated'' (sometimes stylized as ''O(verly) D(edicated)'' and shortened as ''OD'') is the fourth solo mixtape by American rapper Kendrick Lamar, released on September 14, 2010, via Top Dawg Entertainment. The album features guest appea ...

'', a 2010 mixtape by Kendrick Lamar * ''The OD EP'', a 2012 extended play by Danny Brown

Organizations

* Batik Air Malaysia (IATA airline code OD) * '' Ordnungsdienst'' , a collaborationist organization in Nazi-occupied Poland * Organization development

People and characters

O.D. (musician) O.D. is one of the founders of the industrial/metal/electronic band Velcra Velcra was a Finnish rock band, established 2000. Their music features female vocals (both clean and distorted) on a background of heavily distorted guitars and marchin ...

, a member of Velcra *

Super OD Asonaba Kwaku Darko (12 January 1935 – 13 February 2018) popularly known as Super OD was a Ghanaian comic actor and a performer who featured in the popular Akan drama TV series, Osofo Dadzie and movies like ' ''Diabolo . Career He started ...

, a Ghanaian actor * O.D (''Gatchaman Crowds''), a character in the anime series ''Gatchaman Crowds'' * Ód or Óðr, a Nordic god

Places

* Odisha, India *

Stormarn (district) Stormarn () is a district in Schleswig-Holstein, Germany. It is bounded by (from the north and clockwise) the districts of Segeberg and Ostholstein, the city of Lübeck, the district of Lauenburg, and the city-state of Hamburg. History In mediev ...

, Germany (vehicle plate code OD)

Science and technology

Optical density Absorbance is defined as "the logarithm of the ratio of incident to transmitted radiant power through a sample (excluding the effects on cell walls)". Alternatively, for samples which scatter light, absorbance may be defined as "the negative lo ...

Outside diameter This page lists the standard US nomenclature used in the description of mechanical gear construction and function, together with definitions of the terms. The terminology was established by the American Gear Manufacturers Association (AGMA), under ...

(also: ''O.D.''), cylinder or pipe external diameter *

Ordnance datum In the British Isles, an ordnance datum or OD is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as AOD for "above ordnance datum". Usually mean sea level (MSL) is used fo ...

, in Britain, an Ordnance Survey data point * od (Unix), a Unix program * Object Desktop, a suite of skinning and customization programs by Stardock, or ''ObjectDock'', another program by the same company * Optical disc * Organization development, the study of organizational change and performance * Ordinal definable set, a set requiring only finitely-many ordinals to define under first-order logic.

Other uses

* Od language, an Indo-Aryan language of Pakistan * Odic force or Od, a life force * '' Occupation Double'', a Quebec reality show that started in 2003 * Official Declaration, part of Latter-day Saint scripture * Olive drab, a color, particularly of some United States Army uniforms *

Online dating Online dating, also known as Internet dating, Virtual dating, or Mobile app dating, is a relatively recent method used by people with a goal of searching for and interacting with potential romantic or sexual partners, via the internet. An onlin ...

* Original dance, the second part of an ice dancing competition * Order of Distinction, a civil honour of Jamaica * OD - original designation in Taxonomy