1. a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite; [syn: strontium, Sr, atomic number 38]
WordNet (r) 3.0 (2006):
atomic number 38
n 1: a soft silver-white or yellowish metallic element of the
alkali metal group; turns yellow in air; occurs in
celestite and strontianite [syn: strontium, Sr, atomic
number 38]