1. 
   Volcanist
   Vol'can·ist noun [ Confer French volcaniste , vulcaniste .] 1. One versed in the history and phenomena of volcanoes. 2. One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth's crust; ...
   Found op http://www.encyclo.co.uk/webster/V/34
   
   
2. 
   Volcanist
   • (n.) One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth`s crust; a vulcanist. Cf. Neptunist. • (n.) One versed in the history and phenomena of volcanoes.
   Found op http://thinkexist.com/dictionary/meaning/volcanist/
   
   
3. 
   volcanist
   volcanologist, volcanist Someone who is a specialist in the study of volcanic phenomena.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2322/2
   
   

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