1. 
   Lactonic
   Lac·ton'ic adjective [ From Lactone .] (Chemistry) Of, pertaining to, or derived from, lactone.
   Found op http://www.encyclo.co.uk/webster/L/4
   
   
2. 
   Lactonic
   Lac·ton'ic adjective [ From Lactose .] (Chemistry) Pertaining to, or designating, an acid obtained by the oxidation of milk sugar ( lactose ).
   Found op http://www.encyclo.co.uk/webster/L/4
   
   
3. 
   lactonic
   <chemistry> Pertaining to, or designating, an acid obtained by the oxidation of milk sugar (lactose), or derived from, lactone. ... Origin: From Lactose. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?lactonic
   
   
4. 
   Lactonic
   • (a.) Of, pertaining to, or derived from, lactone. • (a.) Pertaining to, or designating, an acid obtained by the oxidation of milk sugar (lactose).
   Found op http://thinkexist.com/dictionary/meaning/lactonic/
   
   

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