NNO may stand for:
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Nuveen North Carolina Dividend Advantage Municipal Fund 2 (stock symbol: NNO)
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Natural number object In category theory, a natural numbers object (NNO) is an object endowed with a Recursion (computer science), recursive Mathematical structure, structure similar to natural numbers. More precisely, in a Category (mathematics), category E with a termi ...
, in
category theory
Category theory is a general theory of mathematical structures and their relations. It was introduced by Samuel Eilenberg and Saunders Mac Lane in the middle of the 20th century in their foundational work on algebraic topology. Category theory ...
, a subfield of mathematics
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National Night Out
National Night Out is a community policing awareness-raising event in the United States, held the first Tuesday of August. Texas celebrates on the first Tuesday in October.
History
National Night Out was established by Matt Peskin in the wester ...
, a crime prevention activity in the United States
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Nynorsk
Nynorsk (; ) is one of the two official written standards of the Norwegian language, the other being Bokmål. From 12 May 1885, it became the state-sanctioned version of Ivar Aasen's standard Norwegian language (''Landsmål''), parallel to the Da ...
, ISO 639-2 and ISO 639-3 language codes
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Nitrous oxide
Nitrous oxide (dinitrogen oxide or dinitrogen monoxide), commonly known as laughing gas, nitrous, or factitious air, among others, is a chemical compound, an Nitrogen oxide, oxide of nitrogen with the Chemical formula, formula . At room te ...
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