1. 
   retrosteroid
   A term sometimes used to designate a steroid in which the orientations of the substituents at carbons-9 and -10 are the opposite of those of the reference or 'parent' compound. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?retrosteroid
   
   
2. 
   retrosteroid
   Type: Term Pronunciation: ret′rō-stēr′oyd, -ster′oyd Definitions: 1. A term sometimes used to designate a steroid in which the orientations of the substituents at carbons-9 and -10 are the opposite of those of the reference or 'parent' compound.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=78079
   
   

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