The DICT Development Group

  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
     glucinium.]
     [1913 Webster]

  glucinium
      n 1: a light strong brittle grey toxic bivalent metallic element
           [syn: beryllium, Be, glucinium, atomic number 4]