T4 or T-4 is used for various purposes as a designation, abbreviation or identifier:
- Terminator 4
- T4 is the IATA code for Hellas Jet airline
- Action T4 was the codename for the program in Nazi Germany to systematically kill people with disabilities. Hellas Jet is a Charter airline based in Athens, Greece. It operates services to Greece from destinations in Europe. Action T4 (Aktion T4 was a program in Nazi Germany spanning October 1939 until August 1941 during which physicians killed 70273 peoplespecified in Hitler's Nazi Germany and the Third Reich are the common English names for Germany under the regime of Adolf Hitler and the National Socialist German Workers
- In endocrinology, see Thyroxine. Endocrinology (from Greek grc ἔνδον endon, "within" grc κρῑνω krīnō, "to separate" and grc -λογία Thyroxine, or 353'5'-tetraiodothyronine (often abbreviated as T4) a form of Thyroid hormones is the major Hormone secreted by the
- In topology, see Normal space. Topology ( Greek topos, "place" and logos, "study" is the branch of Mathematics that studies the properties of In Topology and related branches of Mathematics, normal spaces, T4 spaces, T5 spaces, and T6 spaces
- The T4 phage is a bacteriophage. Enterobacteria phage T4 is a Phage that infects E coli bacteria. This article is about a biological infectious particle for other uses see Phage (disambiguation.
- Sukhoi T-4, a Soviet aircraft
- Kawasaki T-4, a Japanese aircraft
- T4 (Channel 4) is the weekend morning teen-aimed slot on Channel 4 (UK). Sukhoi T-4, or "Aircraft 100" or "Project 100" or "Sotka" was a Soviet high speed reconnaissance and interceptor aircraft that WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout T4 (presumably meaning Teenage 4) is a scheduling slot on Channel 4 ( UK) from about 9 a Channel 4 is a public-service Television and Radio broadcaster in the United Kingdom centred around a television channel of the same name which began
- In Canadian tax law, a T4 slip is a form used in filing an Income Tax Return which indicates remuneration received and other deductions taken during the year. The level of Taxation in Canada is average among Organisation for Economic Co-operation and Development (OECD countries Income taxes in Canada constitute the majority of the annual revenues of the Government of Canada, and of the governments of the Provinces of Canada. Normally Canadian Individual tax returns for any specific year must be filedby April 30 of the following year Separate T4's are issued for each form of employment income earned in one calendar year.
- T4 spinal nerve
- Fourth thoracic vertebra of the vertebral column, in human anatomy
- T4 is the short name for Marc Miller's Traveller Published by Imperium Games, Inc. The term spinal nerve generally refers to the mixed spinal Nerve, which is formed from the dorsal and ventral roots that come out of the Spinal cord. The 12 thoracic vertebrae compose the middle segment of the Vertebral column, between the Cervical vertebrae and the Lumbar vertebrae. A vertebra (plural vertebrae) is an individual Irregular bone in the spinal or Vertebral column ( aka ischis a flexuous and flexible column In Human anatomy, the vertebral column ( backbone or spine) is a column of 34 Vertebrae the Sacrum, Intervertebral Human anatomy, which with physiology and biochemistry is a complementary basic medical science is primarily the scientific study of the morphology of the adult Human body Marc W Miller (born 1947 is an American Game designer. Miller was one of the founding partners of the Game Designers' Workshop (GDW and the original Traveller is a series of related Science fiction Role-playing games the first published in 1977 by Game Designers' Workshop and subsequent editions
- The T-4 Atomic Demolition Munition was a small tactical nuclear bomb. The T4 Atomic Demolition Munitions (ADM were modified versions of the W9 nuclear artillery shells
- The Terminal 4 of Madrid Barajas International Airport. Madrid-Barajas Airport (Aeropuerto de Madrid-Barajas is the main international airport serving the Spanish capital Madrid.
- The designation of the series IV Volkswagen Transporter van
- The Italian name for the high explosive RDX. Italy (Italia officially the Italian Republic, (Repubblica Italiana is located on the Italian Peninsula in Southern Europe, and on the two largest Cyclotrimethylenetrinitramine, also known as RDX, cyclonite, hexogen, and T4, is an Explosive Nitroamine widely used
- A group of Australian Telecommunications companies (representing Tell The Truth Telstra)
- T4 (Tabular Timeline Tracking Tool), a Software tool for OpenVMS
- Paris Tramway Line 4
- The Text Templating Transformation Toolkit, is a text transformation technology developed by Microsoft. Open Virtual Memory System ( OpenVMS) initially known just as Virtual Memory System ( VMS) is the name of a High-end Computer server Tramway line T4 is a Tram-train line just outside the limits of Paris proper operating in part on SNCF lines connecting Bondy ''RER'' station
- G7e/T4 Falke German torpedo
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