N (disambiguation)

For the Wikipedia guideline on notability requirements, see WP:N

N is the fourteenth letter of the Latin alphabet.

N may also refer to:

Mathematics

• $\mathbb{N}$, the set of natural numbers
• N for nullae, a rare Roman numeral for zero
• n, the size of a statistical sample

Science

• N for Newton (unit), the SI derived unit of force
• N or $F_n$, a normal force in mechanics
• N, the chemical symbol for the element nitrogen
• N or Asn, the symbol for the common natural amino acid asparagine
• N, the Normality (chemistry) or chemical concentration of a solution
• N, the neutron number, the number of neutrons in a nuclide
• N, in Brillouin zone, the center of a face of a body-centered cubic lattice
• n, for nano-, prefix in the SI system of units denoting a factor of 10⁻⁹
• n, the optical refractive index of a material
• n, the principal quantum number, the first of a set of quantum numbers of an atomic orbital
• n, an electron density, the measure of the probability of an electron being present at a specific location
• n, an amount of substance in chemical physics
• ATC code N Nervous system, a section of the Anatomical Therapeutic Chemical Classification System
• Haplogroup N (mtDNA), a human mitochondrial DNA haplogroup
• Haplogroup N (Y-DNA), a human Y-chromosome DNA haplogroup
• N band, an atmospheric transmission window in the mid-infrared centred on 10 micrometres
• N ray, a hypothesized form of radiation, found to be illusory

Engineering

• N, in geotechnical engineering, the result of a standard penetration test
• N, in electrical systems, the connection to neutral
• N, an ITU prefix allocated to the United States for radio and television stations
• n (Poland), a digital TV platform
• N battery or N cell, a standard size of dry cell battery
• N connector, a threaded RF connector for joining coaxial cables

Entertainment

• N., a 2008 short story by Stephen King
• Near (Death Note) (alias N), a character in the manga series Death Note
• N, an alias of Drew Mulholland, who recorded more often as Mount Vernon Arts Lab
• N (Norther album), a 2008 album by Norther
• "N", a song by BanYa for the "Pump It Up: The Perfect Collection" music video game
• "n", a song by iamamiwhoami
• N (video game), a 2005 computer game
• N, the leader and king of crime syndicate Team Plasma in the Pokémon franchise
• The N, a former name of American television network TeenNick

Language

• [n̪], [n], [ɳ], [ɲ], [ŋ], [ɴ], symbols representing nasal stops in the International Phonetic Alphabet
• N (kana), a Japanese kana

Other uses

• N, North, one of the cardinal directions of the compass
• N postcode area, the part of the London post town covering part of North London, England
• ₦, the symbol for the Nigerian naira currency
• N, the code used to denote vehicle registration plates of Norway
• N (New York City Subway service), a service of the New York City Subway
• N Judah, a Muni Metro line in San Francisco, California
• N (Los Angeles Railway), a line operated by the Los Angeles Railway from 1920 to 1950
• N class ferry, a class of small RORO ferry
• N scale or N gauge, a popular model railway size
• N, the identifier for the knight (chess) in algebraic notation

See also

• N class (disambiguation)
• N road (disambiguation)
• N type (disambiguation)
• N-word (disambiguation)
• n- (disambiguation), the n- arbitary prefix
• Ñ, a letter used in the Spanish and Filipino alphabets
• All pages beginning with "N"
• All pages with titles containing "N"
• Prefix disambiguation: NA, NB, NC, ND, NE, NF, NG, NH, NI, NJ, NK, NL, NM, NN, NO, NP, NQ, NR, NS, NT, NU, NV, NW, NX, NY, NZ