The meaning of DUCT is a bodily tube or vessel especially when carrying the secretion of a gland. How to use duct in a sentence.

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Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air. [1] . …

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DUCT definition: 1. a tube or pipe that carries liquid or air, especially in and out of buildings or through the…. Learn more.

DUCT definition: any tube, canal, pipe, or conduit by which a fluid, air, or other substance is conducted or conveyed. See examples of duct used in a sentence.

Dec 17, 2025 · A duct is a pipe, tube, or tunnel through which water can flow. If there's a leaking duct in your kitchen, you may need to patch it or replace it — in any event, you should probably call a plumber.