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tunnel disease see aeroembolism. [2 definitions]
tunnel vision an abnormal condition in which one loses peripheral vision. [2 definitions]
tupelo any of several sour gum trees of swampy areas in the southern United States. [2 definitions]
Tupi a member of any of several Indian peoples resident in various river valleys of Brazil, esp. the Amazon. [2 definitions]
tuppence see twopence.
tuque in Canada, a knitted winter cap resembling a stocking cap of double thickness.
turban a head covering worn esp. by Muslim men, consisting of a long piece of cloth wrapped several times around the head. [3 definitions]
turbellarian belonging to a class of mostly aquatic flatworms that have cilia on the surface of the body. [2 definitions]
turbid clouded or murky because of stirred-up particles or sediment; muddy. [3 definitions]
turbidimeter an instrument that measures the turbidity of a fluid by the degree of scattering of a light beam passed through it.
turbine an engine driven by a moving fluid, such as water, steam, or air, that pushes against the blades or paddles attached to a central shaft.
turbo see turbocharger.
turbo- turbine.
turbocharge to improve the power or maintain air pressure in (an engine) by using a turbocharger.
turbocharger a device attached to an internal-combustion engine that uses the exhaust gases to power a turbine that drives a supercharger that supplies compressed air to the cylinders.
turbofan a turbojet engine in which a fan forces air diverted from the main engine directly into the hot turbine exhaust, adding to the total thrust. [3 definitions]
turbogenerator a generator attached to and powered by a turbine.
turbojet a tunnel-like engine in which air compressed by turbine-driven spinning blades and mixed with atomized fuel is ignited, producing a powerful jet of hot gases that provides thrust and also drives the turbine; turbojet engine. [2 definitions]
turboprop a turbojet engine with a turbine-driven propeller that provides a large part of the thrust, adding this to the thrust of the jet exhaust; turboprop engine. [2 definitions]
turbosupercharger see turbocharger.
turbot a large, flat, diamond-shaped saltwater fish, used for food. [2 definitions]