Wordnet 3.0
NOUN (1)
1. 
 a bluish-white lustrous metallic element; 
 brittle at ordinary temperatures but malleable when heated; 
 used in a wide variety of alloys and in galvanizing iron; 
 it occurs naturally as zinc sulphide in zinc blende; 
[syn: zinc, Zn, atomic number 30]
WordNet (r) 3.0 (2006):
atomic number 30
    n 1: a bluish-white lustrous metallic element; brittle at
         ordinary temperatures but malleable when heated; used in a
         wide variety of alloys and in galvanizing iron; it occurs
         naturally as zinc sulphide in zinc blende [syn: zinc,
         Zn, atomic number 30]