T

Encyclopedia : T : T : T : T

Latin alphabet
Aa Bb Cc Dd
Ee Ff Gg Hh Ii Jj
Kk Ll Mm Nn Oo Pp
Qq Rr Ss Tt Uu Vv
Ww Xx Yy Zz

The letter T is the twentieth letter in the Latin alphabet. Its name in English is tee [ti:].

Contents

1 History
2 Codes for computing
3 Meanings for T

3.1 Other abbreviations

4 See also

History

Proto-Semitic T	Phoenician T	Etruscan T	Greek Tau

Tâw was the last letter of the Western Semitic and Hebrew alphabets, and probably represented a cross. The sound value of Semitic Taw, Greek alphabet Tαυ (Tau), Old Italic and Latin T has remained fairly constant, representing IPA /t/ in each of these; and it has also kept its original basic shape in all of these alphabets.

Codes for computing

Alternative representations for T

NATO phonetic		Morse code
Tango		[–]

Signal flag	Semaphore	ASL Manual	Braille

In Unicode the capital T is codepoint U+0054 and the lowercase t is U+0074.

The ASCII code for capital T is 84 and for lowercase t is 116; or in binary 01010100 and 01110100, correspondingly.

The EBCDIC code for capital T is 227 and for lowercase t is 163.

The numeric character references in HTML and XML are "T" and "t" for upper and lower case respectively.

Meanings for T

T- is used as a prefix for an object that is shaped like the capital letter T, such as T-shirt, T-bone, and T-joint.
In anatomy, T means thoracic, as in T-spine, or written with a number (from T1 to T12) refers to a numbered thoracic vertebra or thoracic spinal nerve.
*Tarsal
*Testis
*Trachea
*Triceps
*Tympanum
*Transverse tubule (muscle neurobiology)
In archaeology, backhoe trench
In astronomy,
* T stands for an October 1 through 15 discovery, in the provisional designation of a comet (e.g. C/1847 T1, Miss Mitchell's Comet) or asteroid (e.g. (4047) 1964 TT₂).
* T stands for the "time of perihelion passage," an orbital parameter placing the object on its orbit.

In automobile engineering,
*Turbocharged

In aviation,
*Takeoff minimum
*Terminal area chart (followed by identification)
*Terrain clearance altitude
*Threshold lighting
*Trainer (as in T-37)

In bibliography,
*Octodecimo (book from 12-1/2 to 15 centimeters in height)
*Title
*Twentyfourmo (book up to 15 centimeters in height)

In biochemistry, T is the symbol for
- threonine
- thymine
- D-Ribosylthymine
- Terminus
- Tetrose
- Thromboplastin
- Thromboxane
- Thymine (also Thy)
- Tocopherol
- Toxin
- Transferrin (Also, TF, TRF)
- Treponema
- Triose
as well as a synonym for the brachyury gene.

In biology,
*Taxus (genus of coniferous trees including the yews)
*Tonus
*Testacella (a genus of slug)
*Tilia, a genus of trees including the basswoods
*Trematode, a genus of flatworms
*Trichinella, a genus of roundworms
*Trichuris, a genus of whipworms
*Tsuga, a genus of coniferous trees including the hemlocks
*Twin
*Twisting number
*Typhlosole
*In botany,
**Tetraspore
**Thallus
**transpiration
**Trichome
**Trillium
**Turnover index
**Typha
*In microbiology,
**Toxigenicity
**Transduction
*In genetics,
**Tenor (genotype of Phlox paniculata)
**terminator
*In zoology, tentacle

In calendars,
*T is often an abbreviation for Tuesday or Thursday.
*Also, Tridi (the third day of the week in the calendar used during the French Revolution from 1792-1806)

In cardiology,
*thrill
*triggered

In chemistry, T is the symbol for tritium, an isotope of hydrogen.
*Also, transport number
*Tautomer
*Tertiary
*Transition metal

In communication, T sometimes stands for telephone number.
*Ground, transportation
*In telecommunication,
**Telemeter (or "telemetry")
**Telephone trunk call (British)
**Television (FCC)
**The (telegraphy)
**Tip (switchboard plug)
**Toggle
**Transmission
In cooking,
* t. is an abbreviation for teaspoon,
* T. is an abbreviation for tablespoon.

In computing, T refers to the T programming language.
*Tag (telecommunications)
*Telnet
*Terabyte
*Third-word designator
*Trace command
*Truth

In crystallography,
*tetragonal
*tetrahedral site
*trigonal
*twin

In economics, T is usually used to represent taxation.
*Also, marginal propensity to tax
*Tourist (rate [value of the English pound])

In electronics, transistor

In emergency management,
*Time in hours after detonation
*vesicant agent

In finance, T is the U.S. ticker symbol for AT&T.
*Also, treasury (as in T-Bill, T-Bond, T-Note)
*Tala, a monetary unit in Western Samoa
*Thaler, or Talari, monetary unit in Ethiopia
*Toronto Stock Exchange
*In anique numismatics, T indicated that a coin had been made in Nantes, France.

In freemasonry, tiler

In French,
*Mardi, "Tuesday"
*tare, "tare"
*titre, "security" (finance)
*tonne, "ton"

In geology,
*Taylor number
*Tilic subgroup (Ilmenite, titanite, perofskite, rutile)
*Toarcian
*Triassic period

In geotextiles, breaking toughness
In geography,
*Tashkent, Uzbekistan
*Tasmania (state)
*Tegucigalpa, Honduras
*Teheran, Iran
*Tempe, Arizona
*Thailand (international vehicle registration)
*Thames River, England
*Tiber River, Italy
*Tientsin, China
*Tigris, River
*Tijuana, Mexico
*Tirana, Albania (used in Albania)
*Tithing (geographical division [British])
*Tonga, South Pacific Islands
*Topeka, Kansas
*Toronto, Canada
*Toulouse, France
*Tralee, Ireland (fishing port registration)
*Trenton, New Jersey
*Tripoli, Libya
*Tsingtao, China
*Tulsa, Oklahoma
*Tuscon, Arizona

In German,
*Tonne (ton)
*Teich (pond [German military])

In hematology, thymus-derived

In horticulture, tender

In immunology, Thomson-Friedenreich Antigen

In the International Phonetic Alphabet, the symbol [t] stands for the voiceless alveolar plosive.

In Italian,
*Tabacchi, "tobacco" (used in the signs of shops)
*Temperatura, "temperature"
*Tempo, "time" (physics)
*Tera-
*Tessla
*Thailandia
*Tomo, "volume" (bibliography)
*Tonnellata, "ton"
*Torre, "tower"
*Trizio (chemistry)
*Tubercolosi
*Various proper names, like Tito, Tristano, Teresa, etc.

In Latin,
*Tabula, "plate"
*Tempore, "in the time of"
*Testamentum, "will"
*Titus (name)
*Tomus, "volume"
*Trinitas, "the Trinity" (Late Latin)

In law,
*tenant
*Testator
*Thomas Mieres (flourished, 1429-39 [Authority cited in pre-1607 legal work])
*treaty

In linguistics,
*Transformation rule
*Trace
*Tu (denotes familiar word forms [from French, "you"])
*In composition,
**Typed
**Wrong tense of verb

In propositional logic T is the symbol for "true".

In machining, symbol for cutting time
*Tolerance

In mass transit, "The T" is the nickname for:
*Boston's Massachusetts Bay Transportation Authority (MBTA)
*Fort Worth's Fort Worth Transportation Authority
*Pittsburgh's Port Authority of Allegheny County (PAT)

In mathematics,
*T is sometimes used for the top element of a lattice. This element is also denoted by the symbol [\top].
*Blackboard bold [\mathbb] represents a torus, or the circle group.
*Term
*Tera- (prefix indicating 10¹²)
*The medieval Roman numeral for 160
* In probability and statistics, t represents Student's t-distribution.

In mechanics, axisymmetric loading
*Symbol for circular tooth thickness of gears

In medicine,
Tamoxifen (antineoplastic drug)
*Ter (three times [pharmacology])
*Test of significance
*Tetracycline (antibiotic compound)
*Theophylline
*Thioguanine, (Also, TG) an antineoplastic drug
*Thiopental (an anesthetic]
*Thymidine
*Tissue
*Trichophyton
*Trimethoprim (also, TMP [antibacterial compound])
*Turnkey
*Tuberculosis
*Trypanosoma
*Taenia
*Transfusion
*Thrombosis
*Thrombus
*Thyroid
*Tidal gas (in respiration)

In metallurgy, teem

In meteorology, thunderstorm

In military science,
*Tracer (ammunition)
*Tracker (British military)
*Training-mission vehicle (Department of Defense symbol)

In music,
*Talon (heel of the bow)
*Tasto (The key of a keyboard instrument; or the fingerboard of a bowed string instrument) [From Italian, "tie" or "fret"]
*Tendre (tender)
*Tenor
*Treble
*Trillo (trill)
*Tutti (sing or play together)

In naming, various proper names, as Thomas, Timothy, Titus, Theresa, etc.

At NASA,
*Thermostabilized
*Throttle command
*Previously "Test" [link]. Today it is synonymous with time for launch. Current time in relation to the launch is commonly given as "T minus (remaining time)".
In navies,
*Military sealift command ship (when precedes vessel classification)
*Transferred
*Telegrapher
*Torpedo (obsolete)
*Tug
*In the Royal Navy,
**Torpedoman
**Turner (rating)

In oncology, tumor

In opthalmology, intraocular tension

As the first letter of a postal code,
* In Canada, T stands for Alberta.

In phonetic alphabets,
*Tango (international)
*Tear (World War II)
*Tare (World War II)
*Toc (Pre-World War II)
*Tommy (World War I [Royal Navy])

In photography,
*tablet-shaped (as in "T-grains")
*total light transmission (in T-number)

In physics,
*Surface tension
*Isotopic spin (Nuclear physics)
* Bloch wave transmission probability (solid-state physics)
* Truth (particle physics)
*In acoustics, reverberation time

In psychology, tier

Publication abbreviations include
*Tappan's Ohio Common Pleas Reports
*Tobacco Tax Ruling, Internal Revenue Bureau (United States)
*Traffic Cases
*Transvaal Provincial Division Reports (South Africa)

In Roman naming convention, T is the abbreviation for the praenomen Titus.

In Russian,
* Tóннa (Tonna) "ton(s)"
* Toвápищ (Tovarishch) "comrade"
* Tom, "volume" (bibliography)

In the sciences,
* t is commonly used as a variable for time,
**In atomic physics, time-reversal
** Time inversion (particle physics)
**Burning time (for rockets)
* t is a symbol for the top quark
* Testosterone
* Meridian angle
* The discipline category abbreviation for metallurgical and materials engineering (from "technology")
* Analyzer response function (Auger spectroscopy)
*Tun (Unit of liquid capacity)
*Torr (Unit)
*Troy (A system of weights for precious metals)
* T is commonly used as a variable for temperature, especially
** Absolute temperature
** Air temperature correction
** Burning time (for rockets)
* In the SI system,
** T is the symbol for the tesla, the SI derived unit for magnetic flux density.
** T, tera, is the SI prefix meaning 10¹².
** t is an abbreviation for tonne, which equals 1000 kilograms, for measuring mass.
**Tagesprobe

In shipping and sailing
*Tapered hatchway
*Thruster
*Thrust of propeller (naval engineering)
*Thunder (in a ship's log-book)
*Twin screw
*Tonnage
*Tipper
*Tropical loading (on load line)
*Tufa (quality of the bottom [nautical charts])

In slang,
*Tablet (anything with a dot of LSD on it)
*Tea (marijuana [U.S., mid-1900s on])
*Tuinal, a barbiturate (U.S.)
*THC, (U.S., late 1900s)

In Spanish,
*Tabla
*Tailandia, "Thailand"
*Talón, "talon" (music)
*También, "also"
*Tara, "tare"
*Tarde, "late"
*Tarifa
*Tarjeta, "card"
*Tasa, "rate" (mailing)
*Tasto, "tasto" (music)
*Técnica
*Técnico
*Técnicos
*Telecomunicaciones
*Telefónica, "telephone," adjective
*Teléfono, "telephone"
*Telegrafía, "telegraphy"
*Telegráfico
*Telégrafos
*Telegrama, "telegram"
*Temperatura, "temperature" (medicine)
*Tempo (music)
*Temporal
*Tenis, "tennis"
*Tenor (music)
*Tensión intraocular, "intraocular tension"
*Tercera, "third"
*Terminación
*Territorial
*Territoriales
*Tesorería, "treasury"
*Tesoro
*Testamento, "will"
*Texto, "text"
*Tiempo, "time"
*Tierra, "land"
*Timbre, "seal"
*Tipógrafo,
*Titular
*Título, "title"
*Tomín (a silver coin used in the past in South America)
*Tomo, "volume"
*Tomografía, "tomography"
*Tonelada(s), "ton(s)" (commerce)
*Total, "total"
*Trabajadores, "workers"
*Trabajo, "work"
*Traductor, "translator"
*Tráfico
*Tránsito
*Transitoria
*Trans
*Transmisiones
*Transporte
*Transportes
*Tratado
*Tratamiento
*Tribunal
*Tributaria
*Tributario
*Trimmer
*Tritio (chemistry)
*Tuberculosis
*Turismo
*Tutti, "tutti" (music)

In spectrophotometry, transmittance

In sports,
* Tackle (American football)
* Tie
* Time consumed in playing game (baseball)
* Timekeeper

In technical drawings,
*Tee (piping joint, etc.)
*Teeth
*Tread (stair details)

In video games, T is the ESRB rating symbol for Teen.

T is a perfume made by Tommy Hilfiger
T- is used as prefix for Deutsche Telekom shares ("T-Shares"), products/services (such as T-DSL) and divisions, such as T-Com, T-Mobile, T-Online and T-Systems.
T is a shortened nickname of actor Laurence Tureaud, also known as Mr. T.
T is the library symbol used for the Tennessee State Library and Archives, Nashville, TN used by the Library of Congress
Aerotec (Sociedade Aerotec Ltda. [Brazil--ICAO aircraft manufacturer identifier])

Other abbreviations

Anchor tested
Table
Tack
Tactical organization
Tactual
Taken
Taken from
Taler
Talc
Tamper
Tanhuma
Tan
Tanker
Tanna
Tap
Tanzania
Tape
Taper
Target
Tarnish
Tata Engineering & Locomotive Co. Ltd.
T bar
Teach
Teacher
Team
Technical (or Technician)
Technological
Telegram
Telephone
Teletype
Temperature
Tempo
Temporal
Temporary
Tenacity
Tense
Tensor
Tent
Tentative target
Teracycle
Term
Terminal
Terminal banding
Termination
Terrace
Terrain
Territory
Tertiary
Testat
Test
Testament
Test equipment
Test reactor
Test set
Tetanus
Tetrahedral
Tetrode
Texan
Text
Textile
Textural
Thai
Than
That
Theft
Theorem
Theoretical
Therapeutic
Therapy
Thermodynamic temperature
Thermometer
Thermostat
Thickness
Thief
Thread
Throat
Throttle
Throughput
Throw
Thrust
Thymus
Tick
Tied
Tight
Tilt
Timber
Time
Time factor
Time period
Timer
Time trial
Tincture
Tinea
Tint
Tire
T-iron
Tissue
Titania
Toe
Togo
Toll
Tolerant
Toilet
Toluene
Tome
Tomography
Ton
Tone
Toner
Tongs
Tongue
Tonometer reading
Tonometry
Tool
Tool life
Tooth
Tooth number
Top
Topical
Top secret
Torch
Tornado
Toroid
Torque
Torsion
Torsional modulus
Torsional moment
Tortoise
Torus
Tosefta
Total
Touch
Tough
Town
Tower
Township
Toxic
Toxicity
Toxicological
T-Profilstahl, T-Eisen
Trace
Tracheotomy set
Track
Tract
Traction
Tractor
Traded
Tradesman
Traditional
Traffic
Traffic headquarters
Trail
Trailer
Training
Trajectory
Transaction
Transcription
Transducer
Transformer
Transition
Transit
Transition point
Translated
Transmission coefficient
Transmission stop
Transmissivity
Transmit (or transmitting)
Transverse direction
Trinitrotoluene
Transitive
Translation
Translocation
Translucency
Transmissibility
Transmitter
Transparency
Transponder
Transport
Transpose
Transversal
Transverse
Trap
Trapezoid
Trauma
Trawling
Traverse
Tray
Treasurer
Treated
Treatment
T reference point
Trend
Trial
Triangle
Triaxial
Triode
Triple
Triplet
Trotter
Truce
True (direction)
Trunk
Truss
Tube
Tubular
Tubular propellant
Tuesday
Tumble
Tuna
Tune
Turbine
Turkish
Turn (or turning)
Turret
Turtle
Tutor
Twine
Twist
Twisting moment
Type
Typhoid

T

History

Codes for computing

Meanings for T

Other abbreviations

See also