ND

ND, Nd, nD, nd, or n.d. may refer to:

Places

• North Dakota, a state in the United States
• New Delhi (India)
• Notre Dame (disambiguation), for a number of churches and colleges

Science and medicine

• Neodymium, an element with the symbol "Nd"
• Doctor of Naturopathic Medicine, an academic degree in naturopathic medicine
• National Diploma, an academic qualification in the Republic of Ireland
• "not determined" or "not detected", "n.d." instead of a numerical value in listings
• n.d., "no date" in bibliographies
• Non-Distended, particularly in reference to abdominal distension during a clinical examination in medicine
• NADH dehydrogenase, an enzyme that catalyzes the transfer of electrons from NADH to coenzyme Q
• n_D, the refractive index of a medium at a wavelength of 589.8 nm (the Fraunhofer "D" lines of Natrium)
• Nth dimension
• The Notitia Dignitatum, a unique document of the Roman imperial chanceries

Politics

• New Democracy (Canada), a former political party in Canada
• New Democracy (Greece), one of the main center-right liberal political parties in Greece
• National Democrats (Sweden), a far-right political party in Sweden

Creative work

• Nate Dogg, an American Rapper
• No Doubt, an American Rock Band
• New Divide, a song by the American Hard Rock band Linkin Park
• Nuclear Dawn, a mod for the game Half-Life 2
• nD, a type of alien in the United Kingdom TV series Invasion Earth.

Technology

• Norsk Data, a defunct Norwegian computer manufacturer
• Neutral density filter, a type of filter used in photography
• Contax N Digital, a digital SLR camera made by Contax
• NetDocuments, a SaaS document management service provider based in Utah.

Other

• Nd (digraph), a digraph present in many African languages
• The ISO 639-1 code for Northern Ndebele language
• Negligent discharge, an accidental discharge of a firearm involving culpable carelessness
• Nuclear disarmament, the dismantlement and proposed dismantling of nuclear weapons
• Norrlands dragonregemente, a cavalry regiment of the Swedish Army
• Nancy Drew, a character in the series of books and video games with the same name

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