1. 
   Dipterygian
   Dip`ter·yg'i·an adjective [ Greek di- = di`s- twice + ... a fin, dim. of ... wing.] (Zoology) Having two dorsal fins; -- said of certain fishes.
   Found op http://www.encyclo.co.uk/webster/D/71
   
   
2. 
   dipterygian
   <zoology> Having two dorsal fins; said of certain fishes. ... Origin: Gr. = twice + a fin, dim. Of wing. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?dipterygian
   
   
3. 
   Dipterygian
   • (a.) Having two dorsal fins; -- said of certain fishes.
   Found op http://thinkexist.com/dictionary/meaning/dipterygian/
   
   
4. 
   dipterygian
   1) Having two dorsal fins
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/dipterygian/1
   
   

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