from The Century Dictionary.

  • noun A duct or passage conveying air; specifically, in ichthyology, the communication of the air-bladder with the intestinal canal. It is persistent in physostomous, temporary in physoclistous, fishes.
  • noun In building, same as airdrain
  • noun In the heating and ventilation of buildings, a large pipe, often built of wood or thin metal, used to transmit air, either cold or hot.


Sorry, no etymologies found.


  • How to Keep Your Online Business Information Secure Hiring and Managing Employees A Servpro franchise in Nashville, part of Servpro Industries Inc., a cleanup and restoration company based in Gallatin, Tenn., scored three carpet-cleaning jobs and one air-duct cleaning job from various chamber members after posting a 15% discount offer on the site, says owner Rob Dixon

    Filling in the Gaps

  • Passive systems are based on either thermosyphon or air-duct cooling systems, and utilize low ambient temperatures during winter to refreeze a buffer layer of non-frost-susceptible material beneath the building.

    Infrastructure and climate in the Arctic

  • The side venting holes pull in cool air to lower CPU and graphic card temperatures and the air-duct funnels the cool air towards the CPU, while unique rear venting holes enhances ventilation around the add-on cards.

    April 2007 -

  • "That fire the fools started two decks down'the air-duct system is going to carry the smoke everywherel" he exclaimed to Vyann.


  • The air also escapes sometimes from the alimentary canal, through an air-duct that connects the floating bladder with the pharynx, and is ejected by the mouth.

    The Evolution of Man — Volume 2

  • This hydrostatic apparatus begins in the Dipneusts to change into a respiratory organ; the blood-vessels in the wall of the bladder now no longer merely secrete air themselves, but also take in fresh air through the air-duct.

    The Evolution of Man — Volume 2

  • Excitement can set the attendant air-duct in motion.

    The Glow-Worm and Other Beetles

  • She asks if she can go back to the day room so the voice in the air-duct can't get to her.

    Too Disgusting to Contemplate, Too Compelling to Ignore

  • Shaw was one of four partners who in 2003 purchased Tougher, a contracting firm in Menands that builds and maintains plumbing and air-duct systems. Local Breaking News

  • But are discount air-duct cleaning services a bargain or another case of something too good to be true?

    WBBM CBS 2 Chicago Top Videos Videos


Log in or sign up to get involved in the conversation. It's quick and easy.