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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Glucinum  \Glu*ci"num\,  n.  [Cf.  F.  glucinium,  glycium  fr  Gr  ?, 
  sweet.  Cf  {Glycerin}.]  (Chem.) 
  A  rare  metallic  element,  of  a  silver  white  color,  and  low 
  specific  gravity  (2.1),  resembling  magnesium.  It  never  occurs 
  naturally  in  the  free  state,  but  is  always  combined,  usually 
  with  silica  or  alumina,  or  both  as  in  the  minerals 
  phenacite,  chrysoberyl,  beryl  or  emerald,  euclase,  and 
  danalite.  It  was  named  from  its  oxide  glucina,  which  was 
  known  long  before  the  element  was  isolated.  Symbol  Gl  Atomic 
  weight  9.1.  Called  also  {beryllium}.  [Formerly  written  also