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airtight

[air-tahyt] /ˈɛərˌtaɪt/
adjective
1.
preventing the entrance or escape of air or gas.
2.
having no weak points or openings of which an opponent may take advantage:
an airtight contract.
Origin
1750-1760
1750-60; air1 + tight
Related forms
airtightly, adverb
airtightness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for airtight
  • Taking no chances, they put on airtight moon suits and disappeared into a sealed examining chamber to work on the body.
  • Flex-duct takeoffs, while often airtight in appearance, can have substantial leakage and should be sealed with mastic.
  • The one flaw in an otherwise airtight sitcom premise.
  • Those in law-enforcement circles had long believed that there would be no indictment without an airtight case.
  • The argument here is more subtle, but nonetheless airtight.
  • Compressed-air storage systems also require an airtight underground space, limiting the locations where they can be installed.
  • And anyone who does science should know that if you want to make a big bold claim, it has to be airtight.
  • The way it works is that a piece of meat and its accompanying seasonings are placed in an airtight bag.
  • Place the cookies in an airtight container, with parchment or waxed paper between each layer.
  • Store dry, whole flax seed in an airtight container at room temperature for up to a year.
British Dictionary definitions for airtight

airtight

/ˈɛəˌtaɪt/
adjective
1.
not permitting the passage of air either in or out
2.
having no weak points; rigid or unassailable: this categorization is hardly airtight
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for airtight
adj.

also air-tight, "impervious to air," 1760, from air (n.1) + tight. Figurative sense of "incontrovertible" (of arguments, alabis, etc.) is from 1929.

Online Etymology Dictionary, © 2010 Douglas Harper
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