Wordnet polsko-angielski 
                         (a soft silver-white or yellowish metallic element of the alkali metal group
turns yellow in air
occurs in celestite and strontianite) 
strontium, Sr, atomic number 38 
synonim: stront
 (a soft silver-white or yellowish metallic element of the alkali metal group
turns yellow in air
occurs in celestite and strontianite) 
strontium, Sr, atomic number 38 
synonim: stront