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gaseous

[gas-ee-uh s, gash-uh s] /ˈgæs i əs, ˈgæʃ əs/
adjective
1.
existing in the state of a gas; not solid or liquid.
2.
pertaining to or having the characteristics of gas.
3.
Informal. lacking firmness or solidity; uncertain; not definite.
4.
gassy (defs 1, 3).
Origin of gaseous
1790-1800
1790-1800; gas + -eous
Related forms
gaseousness, gaseity
[ga-see-i-tee] /gæˈsi ɪ ti/ (Show IPA),
noun
nongaseous, adjective
nongaseousness, noun
pseudogaseous, adjective
quasi-gaseous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for gaseous

gaseous

/ˈɡæsɪəs; -ʃəs; -ʃɪəs; ˈɡeɪ-/
adjective
1.
of, concerned with, or having the characteristics of a gas
Derived Forms
gaseousness, noun
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 gaseous
adj.

1799, from gas (n.) + -ous.

Online Etymology Dictionary, © 2010 Douglas Harper
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gaseous in Medicine

gaseous gas·e·ous (gās'ē-əs, gāsh'əs)
adj.

  1. Of, relating to, or existing as a gas.

  2. Full of or containing gas; gassy.


gas'e·ous·ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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gaseous in Science
gas
  (gās)   
One of four main states of matter, composed of molecules in constant random motion. Unlike a solid, a gas has no fixed shape and will take on the shape of the space available. Unlike a liquid, the intermolecular forces are very small; it has no fixed volume and will expand to fill the space available.

gaseous adjective (gās'ē-əs, gāsh'əs)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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