1. 
   Bicostate
   Bi·cos'tate adjective [ Prefix bi- + costate .] (Botany) Having two principal ribs running longitudinally, as a leaf.
   Found op http://www.encyclo.co.uk/webster/B/48
   
   
2. 
   bicostate
   <botany> Having two principal ribs running longitudinally, as a leaf. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?bicostate
   
   
3. 
   Bicostate
   • (a.) Having two principal ribs running longitudinally, as a leaf.
   Found op http://thinkexist.com/dictionary/meaning/bicostate/
   
   

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