Wordnet 3.0
NOUN (2)
1. 
 the formation in animals of glycogen from glucose; 
2. 
 the conversion of glucose to glycogen when the glucose in the blood exceeds the demand; 
The Collaborative International Dictionary of English v.0.48:
Glycogeny \Gly*cog"e*ny\, Glycogenesis \Gly`co*gen"e*sis\, n.
   (Physiol.)
   The production or formation of sugar from gycogen, as in the
   liver.
   [1913 Webster]
WordNet (r) 3.0 (2006):
glycogenesis
    n 1: the formation in animals of glycogen from glucose
    2: the conversion of glucose to glycogen when the glucose in the
       blood exceeds the demand