Look up duct in Wiktionary, the free dictionary.

A duct may refer to:

• Duct (anatomy), various ducts in anatomy and physiology
• Duct (HVAC) (Heating Ventilating and Air-Conditioning), for transfer of air between spaces in a structure
• Duct tape, a kind of adhesive tape
• Ducted fan, motor for aircraft
• Electrical bus duct, a metal enclosure for busbars
• Duct (Industrial Exhaust), industrial exhaust duct systems which are low pressure pneumatic conveners.

Telecommunication

• Atmospheric duct, a horizontal layer in the lower atmosphere in which the vertical refractive index gradients are such that radio signals (a) are guided or ducted, (b) tend to follow the curvature of the Earth, and (c) experience less attenuation in the ducts than they would if the ducts were not present
• Duct bank, a set of electrical conduits, entering a building underground

[edit] See also

• Ducked

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