TM or Tm and variants may refer to: *

Trademark A trademark (also written trade mark or trade-mark) is a type of intellectual property consisting of a recognizable sign, design, or expression that identifies products or services from a particular source and distinguishes them from othe ...

, often indicated with the symbol ™ **

Trademark symbol The trademark symbol is a symbol to indicate that the preceding mark is a trademark, specifically an unregistered trademark. It complements the registered trademark symbol which is reserved for trademarks registered with an appropriate g ...

Businesses and organizations

* TM Forum, telecommunications and entertainment industry association * TM Supermarket, a chain of supermarkets in Zimbabwe * LAM Mozambique Airlines (IATA airline designator TM) *

Telekom Malaysia Telekom Malaysia Berhad (TM) is a Malaysian telecommunications company founded in 1984. Beginning as the national telecommunications company for fixed line, radio and television broadcasting services, it has evolved to become the country's larg ...

, telecommunications company *

Texas Mexican Railway The Texas Mexican Railway was a railroad that operated as a subsidiary of the Kansas City Southern Railway in Texas. It is often referred to as the Tex-Mex, or TexMex Railway. On January 1, 2005, Kansas City Southern took control of the Texas ...

(reporting mark TM) *

TM (cellular service) TM (formerly known as Islacom, Touch Mobile, and Republika ng TM and also known as TM Tambayan) is a Filipino cellular service brand of Filipino telecommunications company Globe Telecom. History TM was launched on September 12, 2001, as Touch Mo ...

, a telecommunications brand in the Philippines *

Toastmasters International Toastmasters International (TI) is a US-headquartered nonprofit educational organization that operates clubs worldwide for the purpose of promoting communication, public speaking, and leadership. History The organization grew out of a single c ...

, an international public speaking organization *

Toyota Motor Corporation is a Japanese multinational automotive manufacturer headquartered in Toyota City, Aichi, Japan. It was founded by Kiichiro Toyoda and incorporated on . Toyota is one of the largest automobile manufacturers in the world, producing about 10 ...

(NYSE symbol TM) *

Tokyo Metro The is a major rapid transit system in Tokyo, Japan, operated by the Tokyo Metro Co. With an average daily ridership of 6.84 million passengers, the Tokyo Metro is the larger of the two subway operators in the city; the other being the Toe ...

, one of the major subway systems of Tokyo

Science and technology

Biology and medicine

* Melting temperature (T_m) in

nucleic acid thermodynamics Nucleic acid thermodynamics is the study of how temperature affects the nucleic acid structure of double-stranded DNA (dsDNA). The melting temperature (''Tm'') is defined as the temperature at which half of the DNA strands are in the random coil o ...

, at which half of DNA strands are in the ssDNA state *

Transport maximum In physiology, transport maximum (alternatively Tm or Tmax) refers to the point at which increase in concentration of a substance does not result in an increase in movement of a substance across a cell membrane. In renal physiology, the concept of ...

, where concentration increase does not speed membrane traversal *

Transverse myelitis Transverse myelitis (TM) is a rare neurological condition wherein the spinal cord is Inflammation, inflamed. The adjective ''wikt:transverse#Adjective, transverse'' implies that the spinal inflammation (myelitis) extends horizontally throughout ...

, a neurological condition in which the spinal cord is inflamed *

Translational medicine Translational medicine (often called translational science, of which it is a form) is defined by the European Society for Translational Medicine as "an interdisciplinary branch of the biomedical field supported by three main pillars: benchside, bed ...

Computing

.tm .tm is the Internet country code top-level domain (ccTLD) for Turkmenistan. It is operated by Internet Computer Bureau. Nic.tm offers domain name purchase, registration, management and renewal as well as Internationalized Domain Name registrati ...

, the Internet domain code for Turkmenistan * Struct tm, calendar time type in the C and C++ programming languages *

Traceability matrix In software development, a traceability matrix (TM) is a document, usually in the form of a table, used to assist in determining the completeness of a relationship by correlating any two baselined documents using a many-to-many relationship com ...

, in software development *

Translation memory A translation memory (TM) is a database that stores "segments", which can be sentences, paragraphs or sentence-like units (headings, titles or elements in a list) that have previously been translated, in order to aid human translators. The translat ...

Turing machine A Turing machine is a mathematical model of computation describing an abstract machine that manipulates symbols on a strip of tape according to a table of rules. Despite the model's simplicity, it is capable of implementing any computer algori ...

, a hypothetical universal computing machine

Physics and chemistry

* Tm ligands, a tridentate ligand used in coordination chemistry *

Melting point The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depen ...

(abbreviated T_m), in physics and materials science *

Thulium Thulium is a chemical element with the symbol Tm and atomic number 69. It is the thirteenth and third-last element in the lanthanide series. Like the other lanthanides, the most common oxidation state is +3, seen in its oxide, halides and other c ...

, symbol Tm, a chemical element *

Transition metal In chemistry, a transition metal (or transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes excluded. They are the elements that ca ...

Transverse Magnetic A transverse mode of electromagnetic radiation is a particular electromagnetic field pattern of the radiation in the plane perpendicular (i.e., transverse) to the radiation's propagation direction. Transverse modes occur in radio waves and microwav ...

modes, in optics and wave theory

Weapons

TM 65 mine The TM 65 (Telamiina 65) is a circular Finnish minimum metal anti-tank blast mine. It is broadly based on the Russian '' TM-62 mine''. The mines body is made from a thin shell of fibreglass Fiberglass (American English) or fibreglass (Common ...

, a Finnish anti-tank mine * TM series of Soviet and Russian anti-tank mines **

TM-41 mine The TM-41 was a circular, metal-cased Soviet anti-tank landmine used during the Second World War. The mines case consisted of a short cylinder with the entire top surface being used as a pressure plate. The mine has a carrying handle on the side o ...

, a Soviet World War II mine **

TM-46 mine The TM-46 mine is a large, circular, metal-cased Soviet anti-tank mine. It uses either a pressure or tilt-rod fuze, which is screwed into the top. Anti-tank mines with this type of fuze were capable of inflicting much more damage to armored veh ...

, a Soviet post-war mine **

TM-57 mine A TM-57 with a tilt-rod fuze The TM-57 mine is a large, circular Soviet metal-cased blast anti-tank mine. It can either be triggered by a pressure or a tilt-rod fuze. A development of the TM-46 mine, it is found in Africa, the Middle East, and ...

, a Soviet Cold War mine **

TM-62 series of mines The TM-62 is a Soviet anti-tank blast mine made in many variants. It has a central fuze and typically a explosive charge, but the variants vary greatly in detail. The mine can be laid manually or automatically from a mine laying machine includ ...

, a series of Soviet Cold War blast mines **

TM-83 mine The TM-83 is a Soviet off-route shaped charge anti-tank mine, first shown publicly in 1993, and developed in 1983. The mine consists of a large Misznay Schardin effect warhead and is actived using its infra-red and seismic sensors. Deployment T ...

, a 1990s Russian mine **

TM-89 mine The TM-89 is a Russian anti-tank mine first publicly shown in 1993. The mine uses a Misznay Schardin effect warhead capable of producing a 60 mm diameter hole in 100 mm of armour. The mine is fitted with a two-channel magnetic influence ...

, a 1990s Russian mine

Other uses in science and technology

Thematic Mapper A Thematic Mapper (TM) is one of the Earth observing sensors introduced in the Landsat program. The first was placed aboard Landsat 4 (decommissioned in 2001), and another was operational aboard Landsat 5 up to 2012. /sup> TM sensors feature seven ...

, an Earth-observing sensor on a Landsat satellite * Terametre (Tm), equal to 10¹² metres * TM (triode) (from French ), standard small-signal vacuum tube of the Allies of World War I

People

Theresa May Theresa Mary May, Lady May (; née Brasier; born 1 October 1956) is a British politician who served as Prime Minister of the United Kingdom and Leader of the Conservative Party from 2016 to 2019. She previously served in David Cameron's cabi ...

is sometimes referred to as TM

Other uses

Thames Measurement Thames Measurement, also known as Thames Tonnage, is a system for measuring ships and boats. It was created in 1855 as a variation of Builder's Old Measurement by the Royal Thames Yacht Club, and was designed for small vessels, such as yachts. It ...

, a shipping tonnage measure * ''Their Majesties'', for multiple monarchs each styled "His/Her

Majesty Majesty (abbreviated HM for His Majesty or Her Majesty, oral address Your Majesty; from the Latin ''maiestas'', meaning "greatness") is used as a manner of address by many monarchs, usually kings or queens. Where used, the style outranks the st ...

" * Torpedoman's mate, a former rank of the U.S. Navy *

Transcendental Meditation Transcendental Meditation (TM) is a form of silent mantra meditation advocated by the Transcendental Meditation movement. Maharishi Mahesh Yogi created the technique in India in the mid-1950s. Advocates of TM claim that the technique promotes ...

, a specific form of mantra meditation *

Trans-Manhattan Expressway Interstate 95 (I-95) is part of the Interstate Highway System and runs from Miami, Florida, to the Canada–United States border near Houlton, Maine. In the U.S. state of New York, I-95 extends from the George Washington Bridge in New Yor ...

, a highway in New York City *

Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...

(ISO country code TM) *

TrackMania ''TrackMania'' is a series of racing games for Microsoft Windows, PlayStation 4, PlayStation 5, Xbox One, Nintendo DS and Wii developed by Nadeo and Firebrand Games. Instead of following the usual trend of choosing a set car and track to ...

, a Nadeo game *

TM (album) ''TM'' is the eighth and final studio album by American boy band Brockhampton. It was released on November 18, 2022, one day after the release of the group's previous studio album '' The Family'', through RCA and Question Everything. For its en ...

, an album by Brockhampton {{disambiguation