noun: (American football, Canadian football) Initialism of defensive tackle. [(American football) Any of a few defensive positions in the middle of the defensive line.]
noun: (law enforcement) Abbreviation of (police) detective.
noun: (education) Initialism of design and technology.
noun: (aviation) Abbreviation of dethermalizer. [A device that alters the aerodynamics of an airplane, glider etc, allowing it to descend quickly but safely, especially when caught in a thermal]
noun: (television) Initialism of digital television. [(uncountable) The broadcasting and receiving of television services via digital (rather than analog) signals, either broadcast, or via cable or satellite.]
noun: (psychiatry) Initialism of delirium tremens. [(pathology) A psychosis of chronic alcoholism, usually due to alcohol withdrawal, which can be fatal. Symptoms include sweating, tremors, terrifying hallucinations, insomnia, restlessness, disorientation and anxiety.]
noun: (medicine) Initialism of diphtheria and tetanus (a type of combination vaccine).
noun: (slang) Abbreviation of detention. [(uncountable) The act of detaining or the state of being detained.]
noun: (slang) Abbreviation of drug test. [Any chemical check for the presence of (usually illegal) drugs in a sample of one's blood, hair or urine.]
