atmolysis

 [at-mol-uh-sis]  

at·mol·y·sis

   [at-mol-uh-sis]
noun, plural at·mol·y·ses  [-seez] .
a process for separating gases or vapors of different molecular weights by transmission through a porous substance.
Origin:
1865–70; atmo- + -lysis
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Atmolysis is always a great word to know.
So is ninnyhammer. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a fool or simpleton; ninny.
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Collins
World English Dictionary
atmolysis (ætˈmɒlɪsɪs)
 
—n , pl -ses
a method of separating gases that depends on their differential rates of diffusion through a porous substance

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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