1. 
   Nonionic
   Any chemical species that has neither a positive or negative charge is nonionic.
   Found op http://www.kcpc.usyd.edu.au/discovery/glossary-all.html
   
   
2. 
   nonionic
   [adj] - not ionic
   Found op http://www.webdictionary.co.uk/definition.php?query=nonionic
   
   
3. 
   nonionic
   nonpolar adjective not ionic; `a nonionic substance`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=nonionic
   
   
4. 
   nonionic
   Type: Term Pronunciation: non′ī-on′ik Definitions: 1. A class of radiographic contrast media that do not ionize in solution, thereby decreasing effective osmolarity and toxicity.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=60975
   
   
5. 
   nonionic
   1) Nonionised 2) Nonionized 3) Unionised 4) Unionized
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/nonionic/1
   
   

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