From Wikipedia, the free encyclopedia
Tn or TN may refer to:
- Air Tahiti Nui, a French Polynesian airline with the IATA airline designation "TN"
- Texas and Northern Railway, an American railway with the reporting mark "TN"
- Todo Noticias, an Argentine cable news network
- Transports en commun de Neuchâtel et environs, a public transport operator in Neuchâtel, Switzerland
- Tamil Nadu, a state in southern India, whose ISO abbreviation is "IN-TN"
- Tennessee, a state in the United States, whose postal abbreviation is "TN"
- Tonbridge, a region in England with the postcode "TN"
- Tunisia, ISO 3166-1 country code
- .tn, the country code top level domain (ccTLD) for Tunisia
- Province of Trento, a province in Italy, whose ISO abbreviation is "IT-TN"
- the former code for North Tipperary, Ireland
- Neel Temperature, the temperature at which an antiferromagnetic material becomes paramagnetic (represented as TN)
- Trigeminal neuralgia, a neuropathic disorder
- Transposon (when immediately followed by a number), a DNA sequence that can change positions
- Twisted nematic field effect, the technology that made LCD displays practical
- TN network, a type of earthing system for protection in electricity network
- TN status ('Treaty national', or 'Trade NAFTA'), an immigration status of a Canadian or Mexican citizen working in the USA under the NAFTA agreement
- Tetraodon, a genus of pufferfish
- The number "trillion" ('TN' or 'tn')
- Telescope Nut, a nickname for an amateur telescope maker
- Telephone Number, an abbreviation used in the telecommunications industry
- Tom Next (or Tomorrow Next), a trade starts tomorrow and settles in the next trading day
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